42031104 has 48 divisors (see below), whose sum is σ = 112071960. Its totient is φ = 14008320.

The previous prime is 42031079. The next prime is 42031111. The reversal of 42031104 is 40113024.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×42031104² = 3533227406917632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2724 + ... + 9564.

Almost surely, 2^42031104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42031104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56035980).

42031104 is an abundant number, since it is smaller than the sum of its proper divisors (70040856).

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

42031104 is an equidigital number, since it uses as much as digits as its factorization.

42031104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6866 (or 6846 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 42031104 is about 6483.1399799788. The cubic root of 42031104 is about 347.6884515156.

Adding to 42031104 its reverse (40113024), we get a palindrome (82144128).

The spelling of 42031104 in words is "forty-two million, thirty-one thousand, one hundred four".