42015432 has 128 divisors (see below), whose sum is σ = 118972800. Its totient is φ = 12300288.

The previous prime is 42015419. The next prime is 42015433. The reversal of 42015432 is 23451024.

It is a super-2 number, since 2×42015432² = 3530593052293248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42015399 and 42015408.

It is not an unprimeable number, because it can be changed into a prime (42015433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627063 + ... + 627129.

It is an arithmetic number, because the mean of its divisors is an integer number (929475).

Almost surely, 2^42015432 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 42015432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59486400).

42015432 is an abundant number, since it is smaller than the sum of its proper divisors (76957368).

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

42015432 is a wasteful number, since it uses less digits than its factorization.

42015432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42015432 is about 6481.9311937107. The cubic root of 42015432 is about 347.6452323257.

Adding to 42015432 its reverse (23451024), we get a palindrome (65466456).

The spelling of 42015432 in words is "forty-two million, fifteen thousand, four hundred thirty-two".