120745405 has 16 divisors (see below), whose sum is σ = 158669568. Its totient is φ = 87480000.

The previous prime is 120745367. The next prime is 120745411. The reversal of 120745405 is 504547021.

It is not a de Polignac number, because 120745405 - 2⁷ = 120745277 is a prime.

It is a super-2 number, since 2×120745405² = 29158905657228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10855 + ... + 18955.

It is an arithmetic number, because the mean of its divisors is an integer number (9916848).

Almost surely, 2^120745405 is an apocalyptic number.

It is an amenable number.

120745405 is a deficient number, since it is larger than the sum of its proper divisors (37924163).

120745405 is a wasteful number, since it uses less digits than its factorization.

120745405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8388.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 120745405 is about 10988.4214061893. The cubic root of 120745405 is about 494.2616001491.

The spelling of 120745405 in words is "one hundred twenty million, seven hundred forty-five thousand, four hundred five".