77021043 has 16 divisors (see below), whose sum is σ = 116902656. Its totient is φ = 44649440.

The previous prime is 77021029. The next prime is 77021047. The reversal of 77021043 is 34012077.

It is not a de Polignac number, because 77021043 - 2¹³ = 77012851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77021047) by changing a digit.

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, 49980 + ... + 51497.

It is an arithmetic number, because the mean of its divisors is an integer number (7306416).

Almost surely, 2^77021043 is an apocalyptic number.

77021043 is a deficient number, since it is larger than the sum of its proper divisors (39881613).

77021043 is a wasteful number, since it uses less digits than its factorization.

77021043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101514.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 77021043 is about 8776.1633416887. The cubic root of 77021043 is about 425.4708378189.

The spelling of 77021043 in words is "seventy-seven million, twenty-one thousand, forty-three".