42287631 has 8 divisors (see below), whose sum is σ = 56430384. Its totient is φ = 28168320.

The previous prime is 42287629. The next prime is 42287657. The reversal of 42287631 is 13678224.

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

It is not a de Polignac number, because 42287631 - 2¹ = 42287629 is a prime.

It is a super-2 number, since 2×42287631² = 3576487471184322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42287592 and 42287601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42287621) 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, 1096 + ... + 9261.

It is an arithmetic number, because the mean of its divisors is an integer number (7053798).

Almost surely, 2^42287631 is an apocalyptic number.

42287631 is a deficient number, since it is larger than the sum of its proper divisors (14142753).

42287631 is a wasteful number, since it uses less digits than its factorization.

42287631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11721.

The product of its digits is 16128, while the sum is 33.

The square root of 42287631 is about 6502.8940480374. The cubic root of 42287631 is about 348.3943623499.

The spelling of 42287631 in words is "forty-two million, two hundred eighty-seven thousand, six hundred thirty-one".