42031371 has 8 divisors (see below), whose sum is σ = 57556624. Its totient is φ = 27263520.

The previous prime is 42031369. The next prime is 42031391. The reversal of 42031371 is 17313024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42031371 - 2¹ = 42031369 is a prime.

It is a super-2 number, since 2×42031371² = 3533272296279282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42031321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189220 + ... + 189441.

It is an arithmetic number, because the mean of its divisors is an integer number (7194578).

Almost surely, 2^42031371 is an apocalyptic number.

42031371 is a deficient number, since it is larger than the sum of its proper divisors (15525253).

42031371 is a wasteful number, since it uses less digits than its factorization.

42031371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378701.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 42031371 is about 6483.1605718199. The cubic root of 42031371 is about 347.6891877372.

Adding to 42031371 its reverse (17313024), we get a palindrome (59344395).

The spelling of 42031371 in words is "forty-two million, thirty-one thousand, three hundred seventy-one".