142400506 has 32 divisors (see below), whose sum is σ = 225255168. Its totient is φ = 67454400.

The previous prime is 142400501. The next prime is 142400509. The reversal of 142400506 is 605004241.

It is not an unprimeable number, because it can be changed into a prime (142400501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503041 + ... + 503323.

It is an arithmetic number, because the mean of its divisors is an integer number (7039224).

Almost surely, 2^142400506 is an apocalyptic number.

142400506 is a deficient number, since it is larger than the sum of its proper divisors (82854662).

142400506 is a wasteful number, since it uses less digits than its factorization.

142400506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 142400506 is about 11933.1683135704. The cubic root of 142400506 is about 522.2003727659.

Adding to 142400506 its reverse (605004241), we get a palindrome (747404747).

The spelling of 142400506 in words is "one hundred forty-two million, four hundred thousand, five hundred six".