120897747 has 12 divisors (see below), whose sum is σ = 174728944. Its totient is φ = 80552880.

The previous prime is 120897743. The next prime is 120897809. The reversal of 120897747 is 747798021.

It is a happy number.

It is not a de Polignac number, because 120897747 - 2² = 120897743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120897743) 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 11 ways as a sum of consecutive naturals, for example, 22713 + ... + 27525.

Almost surely, 2^120897747 is an apocalyptic number.

120897747 is a deficient number, since it is larger than the sum of its proper divisors (53831197).

120897747 is a wasteful number, since it uses less digits than its factorization.

120897747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7610 (or 7607 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 120897747 is about 10995.3511540105. The cubic root of 120897747 is about 494.4693793632.

The spelling of 120897747 in words is "one hundred twenty million, eight hundred ninety-seven thousand, seven hundred forty-seven".