142234431 has 8 divisors (see below), whose sum is σ = 189749040. Its totient is φ = 94771392.

The previous prime is 142234423. The next prime is 142234447. The reversal of 142234431 is 134432241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142234431 - 2³ = 142234423 is a prime.

It is a super-2 number, since 2×142234431² = 40461266723787522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142234481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5916 + ... + 17873.

It is an arithmetic number, because the mean of its divisors is an integer number (23718630).

Almost surely, 2^142234431 is an apocalyptic number.

142234431 is a deficient number, since it is larger than the sum of its proper divisors (47514609).

142234431 is a wasteful number, since it uses less digits than its factorization.

142234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25785.

The product of its digits is 2304, while the sum is 24.

The square root of 142234431 is about 11926.2077375836. The cubic root of 142234431 is about 521.9972879001.

Adding to 142234431 its reverse (134432241), we get a palindrome (276666672).

It can be divided in two parts, 1422 and 34431, that added together give a palindrome (35853).

The spelling of 142234431 in words is "one hundred forty-two million, two hundred thirty-four thousand, four hundred thirty-one".