42077257720 has 32 divisors (see below), whose sum is σ = 94680011520. Its totient is φ = 16829804160.

The previous prime is 42077257687. The next prime is 42077257837. The reversal of 42077257720 is 2775277024.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899305 + ... + 944935.

It is an arithmetic number, because the mean of its divisors is an integer number (2958750360).

Almost surely, 2^42077257720 is an apocalyptic number.

42077257720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42077257720 is an abundant number, since it is smaller than the sum of its proper divisors (52602753800).

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

42077257720 is a wasteful number, since it uses less digits than its factorization.

42077257720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68695 (or 68691 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 43.

The spelling of 42077257720 in words is "forty-two billion, seventy-seven million, two hundred fifty-seven thousand, seven hundred twenty".