125440542 has 16 divisors (see below), whose sum is σ = 278756880. Its totient is φ = 41813496.

The previous prime is 125440541. The next prime is 125440571. The reversal of 125440542 is 245044521.

125440542 is a `hidden beast` number, since 1 + 254 + 405 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125440541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161433 + ... + 1161540.

It is an arithmetic number, because the mean of its divisors is an integer number (17422305).

Almost surely, 2^125440542 is an apocalyptic number.

125440542 is an abundant number, since it is smaller than the sum of its proper divisors (153316338).

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

125440542 is a wasteful number, since it uses less digits than its factorization.

125440542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322984 (or 2322978 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 125440542 is about 11200.0241964024. The cubic root of 125440542 is about 500.5867006288.

The spelling of 125440542 in words is "one hundred twenty-five million, four hundred forty thousand, five hundred forty-two".