42800390 has 32 divisors (see below), whose sum is σ = 82010880. Its totient is φ = 16026624.

The previous prime is 42800371. The next prime is 42800393. The reversal of 42800390 is 9300824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42800393) 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, 37346 + ... + 38474.

It is an arithmetic number, because the mean of its divisors is an integer number (2562840).

Almost surely, 2^42800390 is an apocalyptic number.

42800390 is a deficient number, since it is larger than the sum of its proper divisors (39210490).

42800390 is a wasteful number, since it uses less digits than its factorization.

42800390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 42800390 is about 6542.2007000703. The cubic root of 42800390 is about 349.7968617142.

The spelling of 42800390 in words is "forty-two million, eight hundred thousand, three hundred ninety".