42086390 has 32 divisors (see below), whose sum is σ = 82391904. Its totient is φ = 15413760.

The previous prime is 42086383. The next prime is 42086393. The reversal of 42086390 is 9368024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42086393) 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, 2945 + ... + 9635.

It is an arithmetic number, because the mean of its divisors is an integer number (2574747).

Almost surely, 2^42086390 is an apocalyptic number.

42086390 is a deficient number, since it is larger than the sum of its proper divisors (40305514).

42086390 is a wasteful number, since it uses less digits than its factorization.

42086390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6752.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 42086390 is about 6487.4024077438. The cubic root of 42086390 is about 347.8408297940.

The spelling of 42086390 in words is "forty-two million, eighty-six thousand, three hundred ninety".