42415140 has 24 divisors (see below), whose sum is σ = 118762560. Its totient is φ = 11310688.

The previous prime is 42415133. The next prime is 42415147. The reversal of 42415140 is 4151424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42415133) and next prime (42415147).

It is not an unprimeable number, because it can be changed into a prime (42415147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353400 + ... + 353519.

It is an arithmetic number, because the mean of its divisors is an integer number (4948440).

Almost surely, 2^42415140 is an apocalyptic number.

It is an amenable number.

42415140 is an abundant number, since it is smaller than the sum of its proper divisors (76347420).

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

42415140 is a wasteful number, since it uses less digits than its factorization.

42415140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706931 (or 706929 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 42415140 is about 6512.6906881872. The cubic root of 42415140 is about 348.7441797053.

Adding to 42415140 its reverse (4151424), we get a palindrome (46566564).

The spelling of 42415140 in words is "forty-two million, four hundred fifteen thousand, one hundred forty".