142671492 has 54 divisors (see below), whose sum is σ = 367157882. Its totient is φ = 46704384.

The previous prime is 142671491. The next prime is 142671493. The reversal of 142671492 is 294176241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (142671491) and next prime (142671493).

It can be written as a sum of positive squares in 3 ways, for example, as 1679616 + 140991876 = 1296^2 + 11874^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (142671491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 612208 + ... + 612440.

Almost surely, 2^142671492 is an apocalyptic number.

142671492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142671492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183578941).

142671492 is an abundant number, since it is smaller than the sum of its proper divisors (224486390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142671492 is a wasteful number, since it uses less digits than its factorization.

142671492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 311 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 142671492 is about 11944.5172359539. The cubic root of 142671492 is about 522.5314093280.

The spelling of 142671492 in words is "one hundred forty-two million, six hundred seventy-one thousand, four hundred ninety-two".