142146740 has 12 divisors (see below), whose sum is σ = 298508196. Its totient is φ = 56858688.

The previous prime is 142146737. The next prime is 142146751. The reversal of 142146740 is 47641241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31854736 + 110292004 = 5644^2 + 10502^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3553649 + ... + 3553688.

It is an arithmetic number, because the mean of its divisors is an integer number (24875683).

Almost surely, 2^142146740 is an apocalyptic number.

142146740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142146740 is an abundant number, since it is smaller than the sum of its proper divisors (156361456).

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

142146740 is a wasteful number, since it uses less digits than its factorization.

142146740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7107346 (or 7107344 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 142146740 is about 11922.5307716105. The cubic root of 142146740 is about 521.8899911551.

Adding to 142146740 its reverse (47641241), we get a palindrome (189787981).

The spelling of 142146740 in words is "one hundred forty-two million, one hundred forty-six thousand, seven hundred forty".