125421272 has 8 divisors (see below), whose sum is σ = 235164900. Its totient is φ = 62710632.

The previous prime is 125421251. The next prime is 125421293. The reversal of 125421272 is 272124521.

It is an interprime number because it is at equal distance from previous prime (125421251) and next prime (125421293).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7838822 + ... + 7838837.

Almost surely, 2^125421272 is an apocalyptic number.

It is an amenable number.

125421272 is a deficient number, since it is larger than the sum of its proper divisors (109743628).

125421272 is a wasteful number, since it uses less digits than its factorization.

125421272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15677665 (or 15677661 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 125421272 is about 11199.1638973631. The cubic root of 125421272 is about 500.5610661740.

Adding to 125421272 its reverse (272124521), we get a palindrome (397545793).

The spelling of 125421272 in words is "one hundred twenty-five million, four hundred twenty-one thousand, two hundred seventy-two".