142431404 has 6 divisors (see below), whose sum is σ = 249254964. Its totient is φ = 71215700.

The previous prime is 142431379. The next prime is 142431409. The reversal of 142431404 is 404134241.

It is a happy number.

142431404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×142431404² = 40573409690822432, 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 142431404.

It is not an unprimeable number, because it can be changed into a prime (142431409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17803922 + ... + 17803929.

It is an arithmetic number, because the mean of its divisors is an integer number (41542494).

Almost surely, 2^142431404 is an apocalyptic number.

It is an amenable number.

142431404 is a deficient number, since it is larger than the sum of its proper divisors (106823560).

142431404 is a wasteful number, since it uses less digits than its factorization.

142431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35607855 (or 35607853 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 142431404 is about 11934.4628701924. The cubic root of 142431404 is about 522.2381389713.

Adding to 142431404 its reverse (404134241), we get a palindrome (546565645).

The spelling of 142431404 in words is "one hundred forty-two million, four hundred thirty-one thousand, four hundred four".