125143542 has 24 divisors (see below), whose sum is σ = 281187816. Its totient is φ = 41714352.

The previous prime is 125143541. The next prime is 125143561. The reversal of 125143542 is 245341521.

It is a super-2 number, since 2×125143542² = 31321812208611528, which contains 22 as substring.

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 (125143541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128263 + ... + 129234.

It is an arithmetic number, because the mean of its divisors is an integer number (11716159).

Almost surely, 2^125143542 is an apocalyptic number.

125143542 is an abundant number, since it is smaller than the sum of its proper divisors (156044274).

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

125143542 is an equidigital number, since it uses as much as digits as its factorization.

125143542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257514 (or 257502 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 125143542 is about 11186.7574390437. The cubic root of 125143542 is about 500.1913161203.

The spelling of 125143542 in words is "one hundred twenty-five million, one hundred forty-three thousand, five hundred forty-two".