42315040 has 96 divisors (see below), whose sum is σ = 108428544. Its totient is φ = 15544320.

The previous prime is 42315019. The next prime is 42315043. The reversal of 42315040 is 4051324.

It is a super-2 number, since 2×42315040² = 3581125220403200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42314999 and 42315017.

It is not an unprimeable number, because it can be changed into a prime (42315043) 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, 127675 + ... + 128005.

It is an arithmetic number, because the mean of its divisors is an integer number (1129464).

Almost surely, 2^42315040 is an apocalyptic number.

42315040 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 42315040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54214272).

42315040 is an abundant number, since it is smaller than the sum of its proper divisors (66113504).

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

42315040 is a wasteful number, since it uses less digits than its factorization.

42315040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 42315040 is about 6505.0011529592. The cubic root of 42315040 is about 348.4696174420.

Adding to 42315040 its reverse (4051324), we get a palindrome (46366364).

The spelling of 42315040 in words is "forty-two million, three hundred fifteen thousand, forty".