125412042 has 32 divisors (see below), whose sum is σ = 287078400. Its totient is φ = 35779248.

The previous prime is 125412013. The next prime is 125412047. The reversal of 125412042 is 240214521.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (125412047) 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, 33459 + ... + 37017.

It is an arithmetic number, because the mean of its divisors is an integer number (8971200).

Almost surely, 2^125412042 is an apocalyptic number.

125412042 is an abundant number, since it is smaller than the sum of its proper divisors (161666358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125412042 is a wasteful number, since it uses less digits than its factorization.

125412042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 125412042 is about 11198.7518054469. The cubic root of 125412042 is about 500.5487867791.

Adding to 125412042 its reverse (240214521), we get a palindrome (365626563).

The spelling of 125412042 in words is "one hundred twenty-five million, four hundred twelve thousand, forty-two".