1404125138 has 16 divisors (see below), whose sum is σ = 2289015960. Its totient is φ = 642110976.

The previous prime is 1404125119. The next prime is 1404125153. The reversal of 1404125138 is 8315214041.

It can be written as a sum of positive squares in 4 ways, for example, as 1281425209 + 122699929 = 35797^2 + 11077^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1404125138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244895 + ... + 250562.

Almost surely, 2^1404125138 is an apocalyptic number.

1404125138 is a deficient number, since it is larger than the sum of its proper divisors (884890822).

1404125138 is a wasteful number, since it uses less digits than its factorization.

1404125138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495581.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1404125138 is about 37471.6577962598. The cubic root of 1404125138 is about 1119.7866137905.

Adding to 1404125138 its reverse (8315214041), we get a palindrome (9719339179).

The spelling of 1404125138 in words is "one billion, four hundred four million, one hundred twenty-five thousand, one hundred thirty-eight".