125021002 has 16 divisors (see below), whose sum is σ = 193105512. Its totient is φ = 60661440.

The previous prime is 125020999. The next prime is 125021003. The reversal of 125021002 is 200120521.

It can be written as a sum of positive squares in 4 ways, for example, as 111323601 + 13697401 = 10551^2 + 3701^2 .

It is not an unprimeable number, because it can be changed into a prime (125021003) 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, 29148 + ... + 33160.

Almost surely, 2^125021002 is an apocalyptic number.

125021002 is a deficient number, since it is larger than the sum of its proper divisors (68084510).

125021002 is a wasteful number, since it uses less digits than its factorization.

125021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 125021002 is about 11181.2790860438. The cubic root of 125021002 is about 500.0280010985.

Adding to 125021002 its reverse (200120521), we get a palindrome (325141523).

The spelling of 125021002 in words is "one hundred twenty-five million, twenty-one thousand, two".