1207568421 has 12 divisors (see below), whose sum is σ = 1748754540. Its totient is φ = 802973760.

The previous prime is 1207568419. The next prime is 1207568431. The reversal of 1207568421 is 1248657021.

It can be written as a sum of positive squares in 2 ways, for example, as 115992900 + 1091575521 = 10770^2 + 33039^2 .

It is not a de Polignac number, because 1207568421 - 2¹ = 1207568419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1207568431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168960 + ... + 175961.

It is an arithmetic number, because the mean of its divisors is an integer number (145729545).

Almost surely, 2^1207568421 is an apocalyptic number.

It is an amenable number.

1207568421 is a deficient number, since it is larger than the sum of its proper divisors (541186119).

1207568421 is a wasteful number, since it uses less digits than its factorization.

1207568421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345316 (or 345313 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1207568421 is about 34750.0851941402. The cubic root of 1207568421 is about 1064.8879575313.

The spelling of 1207568421 in words is "one billion, two hundred seven million, five hundred sixty-eight thousand, four hundred twenty-one".