142335431 has 16 divisors (see below), whose sum is σ = 170139648. Its totient is φ = 116424000.

The previous prime is 142335421. The next prime is 142335437. The reversal of 142335431 is 134533241.

It is not a de Polignac number, because 142335431 - 2⁶ = 142335367 is a prime.

It is a super-2 number, since 2×142335431² = 40518749835911522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142335431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142335437) 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, 96026 + ... + 97496.

It is an arithmetic number, because the mean of its divisors is an integer number (10633728).

Almost surely, 2^142335431 is an apocalyptic number.

142335431 is a deficient number, since it is larger than the sum of its proper divisors (27804217).

142335431 is a wasteful number, since it uses less digits than its factorization.

142335431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102.

The product of its digits is 4320, while the sum is 26.

The square root of 142335431 is about 11930.4413581393. The cubic root of 142335431 is about 522.1208146052.

Adding to 142335431 its reverse (134533241), we get a palindrome (276868672).

The spelling of 142335431 in words is "one hundred forty-two million, three hundred thirty-five thousand, four hundred thirty-one".