42278502 has 32 divisors (see below), whose sum is σ = 97005312. Its totient is φ = 12033504.

The previous prime is 42278501. The next prime is 42278527. The reversal of 42278502 is 20587224.

It is a self number, because there is not a number n which added to its sum of digits gives 42278502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42278501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10108 + ... + 13664.

It is an arithmetic number, because the mean of its divisors is an integer number (3031416).

Almost surely, 2^42278502 is an apocalyptic number.

42278502 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42278502 is an abundant number, since it is smaller than the sum of its proper divisors (54726810).

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

42278502 is a wasteful number, since it uses less digits than its factorization.

42278502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42278502 is about 6502.1920919025. The cubic root of 42278502 is about 348.3692902350.

The spelling of 42278502 in words is "forty-two million, two hundred seventy-eight thousand, five hundred two".