1207942720 has 56 divisors (see below), whose sum is σ = 2899160064. Its totient is φ = 479356416.

The previous prime is 1207942709. The next prime is 1207942751. The reversal of 1207942720 is 272497021.

It is a happy number.

It is a super-2 number, since 2×1207942720² = 2918251229601996800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25779 + ... + 55501.

Almost surely, 2^1207942720 is an apocalyptic number.

1207942720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1207942720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1449580032).

1207942720 is an abundant number, since it is smaller than the sum of its proper divisors (1691217344).

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

1207942720 is a wasteful number, since it uses less digits than its factorization.

1207942720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29867 (or 29857 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 1207942720 is about 34755.4703607936. The cubic root of 1207942720 is about 1064.9979707104.

The spelling of 1207942720 in words is "one billion, two hundred seven million, nine hundred forty-two thousand, seven hundred twenty".