42150540 has 48 divisors (see below), whose sum is σ = 120540672. Its totient is φ = 11000256.

The previous prime is 42150509. The next prime is 42150547. The reversal of 42150540 is 4505124.

It is not an unprimeable number, because it can be changed into a prime (42150547) 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, 4654 + ... + 10293.

It is an arithmetic number, because the mean of its divisors is an integer number (2511264).

Almost surely, 2^42150540 is an apocalyptic number.

It is an amenable number.

42150540 is an abundant number, since it is smaller than the sum of its proper divisors (78390132).

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

42150540 is a wasteful number, since it uses less digits than its factorization.

42150540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15006 (or 15004 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42150540 is about 6492.3447228255. The cubic root of 42150540 is about 348.0174717083.

Adding to 42150540 its reverse (4505124), we get a palindrome (46655664).

The spelling of 42150540 in words is "forty-two million, one hundred fifty thousand, five hundred forty".