125211642 has 16 divisors (see below), whose sum is σ = 253441440. Its totient is φ = 41234192.

The previous prime is 125211607. The next prime is 125211643. The reversal of 125211642 is 246112521.

It is a super-3 number, since 3×125211642³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (125211643) 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, 125217 + ... + 126212.

It is an arithmetic number, because the mean of its divisors is an integer number (15840090).

Almost surely, 2^125211642 is an apocalyptic number.

125211642 is an abundant number, since it is smaller than the sum of its proper divisors (128229798).

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

125211642 is a wasteful number, since it uses less digits than its factorization.

125211642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251517.

The product of its digits is 960, while the sum is 24.

The square root of 125211642 is about 11189.8008025165. The cubic root of 125211642 is about 500.2820302213.

The spelling of 125211642 in words is "one hundred twenty-five million, two hundred eleven thousand, six hundred forty-two".