1262125720 has 32 divisors (see below), whose sum is σ = 2846380320. Its totient is φ = 503677440.

The previous prime is 1262125717. The next prime is 1262125727. The reversal of 1262125720 is 275212621.

It is a super-2 number, since 2×1262125720² = 3185922666171036800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262125727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19116 + ... + 53755.

It is an arithmetic number, because the mean of its divisors is an integer number (88949385).

Almost surely, 2^1262125720 is an apocalyptic number.

1262125720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1262125720 is an abundant number, since it is smaller than the sum of its proper divisors (1584254600).

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

1262125720 is a wasteful number, since it uses less digits than its factorization.

1262125720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73315 (or 73311 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1262125720 is about 35526.4087686892. The cubic root of 1262125720 is about 1080.6893518533.

The spelling of 1262125720 in words is "one billion, two hundred sixty-two million, one hundred twenty-five thousand, seven hundred twenty".