142225431 has 16 divisors (see below), whose sum is σ = 203865600. Its totient is φ = 87913728.

The previous prime is 142225429. The next prime is 142225439. The reversal of 142225431 is 134522241.

It is not a de Polignac number, because 142225431 - 2¹ = 142225429 is a prime.

It is a super-2 number, since 2×142225431² = 40456146446271522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142225439) 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, 23866 + ... + 29223.

It is an arithmetic number, because the mean of its divisors is an integer number (12741600).

Almost surely, 2^142225431 is an apocalyptic number.

142225431 is a deficient number, since it is larger than the sum of its proper divisors (61640169).

142225431 is a wasteful number, since it uses less digits than its factorization.

142225431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53158.

The product of its digits is 1920, while the sum is 24.

The square root of 142225431 is about 11925.8304113382. The cubic root of 142225431 is about 521.9862777327.

Adding to 142225431 its reverse (134522241), we get a palindrome (276747672).

The spelling of 142225431 in words is "one hundred forty-two million, two hundred twenty-five thousand, four hundred thirty-one".