42310840 has 96 divisors (see below), whose sum is σ = 112654800. Its totient is φ = 14177280.

The previous prime is 42310831. The next prime is 42310871. The reversal of 42310840 is 4801324.

42310840 = T₂₅₇ + T₂₅₈ + ... + T₆₄₆.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74076 + ... + 74644.

Almost surely, 2^42310840 is an apocalyptic number.

42310840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42310840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56327400).

42310840 is an abundant number, since it is smaller than the sum of its proper divisors (70343960).

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

42310840 is a wasteful number, since it uses less digits than its factorization.

42310840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 42310840 is about 6504.6783164120. The cubic root of 42310840 is about 348.4580878865.

The spelling of 42310840 in words is "forty-two million, three hundred ten thousand, eight hundred forty".