42071590 has 32 divisors (see below), whose sum is σ = 84854304. Its totient is φ = 14883840.

The previous prime is 42071581. The next prime is 42071597. The reversal of 42071590 is 9517024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42071597) 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, 1099 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (2651697).

Almost surely, 2^42071590 is an apocalyptic number.

42071590 is an abundant number, since it is smaller than the sum of its proper divisors (42782714).

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

42071590 is a wasteful number, since it uses less digits than its factorization.

42071590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10392.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 42071590 is about 6486.2616351794. The cubic root of 42071590 is about 347.8000513868.

It can be divided in two parts, 420 and 71590, that added together give a triangular number (72010 = T₃₇₉).

The spelling of 42071590 in words is "forty-two million, seventy-one thousand, five hundred ninety".