125401042 has 24 divisors (see below), whose sum is σ = 208674900. Its totient is φ = 56459520.

The previous prime is 125401013. The next prime is 125401043. The reversal of 125401042 is 240104521.

125401042 = 194² + 195² + ... + 726².

It can be written as a sum of positive squares in 6 ways, for example, as 10504081 + 114896961 = 3241^2 + 10719^2 .

It is not an unprimeable number, because it can be changed into a prime (125401043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9334 + ... + 18382.

Almost surely, 2^125401042 is an apocalyptic number.

125401042 is a deficient number, since it is larger than the sum of its proper divisors (83273858).

125401042 is a wasteful number, since it uses less digits than its factorization.

125401042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9118 (or 9105 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 125401042 is about 11198.2606685146. The cubic root of 125401042 is about 500.5341518271.

Adding to 125401042 its reverse (240104521), we get a palindrome (365505563).

The spelling of 125401042 in words is "one hundred twenty-five million, four hundred one thousand, forty-two".