140142132 has 72 divisors (see below), whose sum is σ = 387831080. Its totient is φ = 42405120.

The previous prime is 140142131. The next prime is 140142133. The reversal of 140142132 is 231241041.

It is an interprime number because it is at equal distance from previous prime (140142131) and next prime (140142133).

It can be written as a sum of positive squares in 4 ways, for example, as 8259876 + 131882256 = 2874^2 + 11484^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140142131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26094 + ... + 31002.

Almost surely, 2^140142132 is an apocalyptic number.

140142132 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 140142132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193915540).

140142132 is an abundant number, since it is smaller than the sum of its proper divisors (247688948).

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

140142132 is a wasteful number, since it uses less digits than its factorization.

140142132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993 (or 4988 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 140142132 is about 11838.1642157895. The cubic root of 140142132 is about 519.4250696993.

Adding to 140142132 its reverse (231241041), we get a palindrome (371383173).

The spelling of 140142132 in words is "one hundred forty million, one hundred forty-two thousand, one hundred thirty-two".