120781578 has 32 divisors (see below), whose sum is σ = 251602560. Its totient is φ = 38606400.

The previous prime is 120781567. The next prime is 120781589. The reversal of 120781578 is 875187021.

It is an interprime number because it is at equal distance from previous prime (120781567) and next prime (120781589).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23976 + ... + 28572.

It is an arithmetic number, because the mean of its divisors is an integer number (7862580).

Almost surely, 2^120781578 is an apocalyptic number.

120781578 is an abundant number, since it is smaller than the sum of its proper divisors (130820982).

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

120781578 is a wasteful number, since it uses less digits than its factorization.

120781578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782.

The product of its (nonzero) digits is 31360, while the sum is 39.

The square root of 120781578 is about 10990.0672427424. The cubic root of 120781578 is about 494.3109523095.

The spelling of 120781578 in words is "one hundred twenty million, seven hundred eighty-one thousand, five hundred seventy-eight".