142204431 has 16 divisors (see below), whose sum is σ = 195221504. Its totient is φ = 92008224.

The previous prime is 142204421. The next prime is 142204451. The reversal of 142204431 is 134402241.

It is not a de Polignac number, because 142204431 - 2⁵ = 142204399 is a prime.

It is a super-2 number, since 2×142204431² = 40444200392067522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142204398 and 142204407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142204411) 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, 50010 + ... + 52776.

It is an arithmetic number, because the mean of its divisors is an integer number (12201344).

Almost surely, 2^142204431 is an apocalyptic number.

142204431 is a deficient number, since it is larger than the sum of its proper divisors (53017073).

142204431 is a wasteful number, since it uses less digits than its factorization.

142204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 142204431 is about 11924.9499370018. The cubic root of 142204431 is about 521.9605855356.

Adding to 142204431 its reverse (134402241), we get a palindrome (276606672).

The spelling of 142204431 in words is "one hundred forty-two million, two hundred four thousand, four hundred thirty-one".