125420400004 has 24 divisors (see below), whose sum is σ = 221385332000. Its totient is φ = 62168757120.

The previous prime is 125420399963. The next prime is 125420400011. The reversal of 125420400004 is 400004024521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220972 + ... + 547420.

Almost surely, 2^125420400004 is an apocalyptic number.

It is an amenable number.

125420400004 is a deficient number, since it is larger than the sum of its proper divisors (95964931996).

125420400004 is a wasteful number, since it uses less digits than its factorization.

125420400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327283 (or 327281 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 125420400004 its reverse (400004024521), we get a palindrome (525424424525).

The spelling of 125420400004 in words is "one hundred twenty-five billion, four hundred twenty million, four hundred thousand, four".