1207425720 has 32 divisors (see below), whose sum is σ = 3622277520. Its totient is φ = 321980160.

The previous prime is 1207425691. The next prime is 1207425743. The reversal of 1207425720 is 275247021.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5030821 + ... + 5031060.

Almost surely, 2^1207425720 is an apocalyptic number.

1207425720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1207425720 is an abundant number, since it is smaller than the sum of its proper divisors (2414851800).

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

1207425720 is a wasteful number, since it uses less digits than its factorization.

1207425720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10061895 (or 10061891 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 1207425720 is about 34748.0318867127. The cubic root of 1207425720 is about 1064.8460091663.

The spelling of 1207425720 in words is "one billion, two hundred seven million, four hundred twenty-five thousand, seven hundred twenty".