142400232 has 96 divisors (see below), whose sum is σ = 418279680. Its totient is φ = 43505280.

The previous prime is 142400213. The next prime is 142400233. The reversal of 142400232 is 232004241.

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

It is not an unprimeable number, because it can be changed into a prime (142400233) 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, 155857 + ... + 156767.

It is an arithmetic number, because the mean of its divisors is an integer number (4357080).

Almost surely, 2^142400232 is an apocalyptic number.

142400232 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 142400232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209139840).

142400232 is an abundant number, since it is smaller than the sum of its proper divisors (275879448).

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

142400232 is a wasteful number, since it uses less digits than its factorization.

142400232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142400232 is about 11933.1568329592. The cubic root of 142400232 is about 522.2000378350.

Adding to 142400232 its reverse (232004241), we get a palindrome (374404473).

The spelling of 142400232 in words is "one hundred forty-two million, four hundred thousand, two hundred thirty-two".