42402771 has 24 divisors (see below), whose sum is σ = 63895104. Its totient is φ = 28100520.

The previous prime is 42402719. The next prime is 42402797. The reversal of 42402771 is 17720424.

It is a happy number.

It is not a de Polignac number, because 42402771 - 2⁷ = 42402643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42402071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50860 + ... + 51686.

It is an arithmetic number, because the mean of its divisors is an integer number (2662296).

Almost surely, 2^42402771 is an apocalyptic number.

42402771 is a deficient number, since it is larger than the sum of its proper divisors (21492333).

42402771 is an equidigital number, since it uses as much as digits as its factorization.

42402771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 42402771 is about 6511.7410114347. The cubic root of 42402771 is about 348.7102764329.

The spelling of 42402771 in words is "forty-two million, four hundred two thousand, seven hundred seventy-one".