42215432 has 16 divisors (see below), whose sum is σ = 90461760. Its totient is φ = 18092304.

The previous prime is 42215431. The next prime is 42215441. The reversal of 42215432 is 23451224.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42215398 and 42215407.

It is not an unprimeable number, because it can be changed into a prime (42215431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376868 + ... + 376979.

It is an arithmetic number, because the mean of its divisors is an integer number (5653860).

Almost surely, 2^42215432 is an apocalyptic number.

It is an amenable number.

42215432 is an abundant number, since it is smaller than the sum of its proper divisors (48246328).

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

42215432 is a wasteful number, since it uses less digits than its factorization.

42215432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753860 (or 753856 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 42215432 is about 6497.3403789551. The cubic root of 42215432 is about 348.1959745249.

Adding to 42215432 its reverse (23451224), we get a palindrome (65666656).

The spelling of 42215432 in words is "forty-two million, two hundred fifteen thousand, four hundred thirty-two".