42612515 has 8 divisors (see below), whose sum is σ = 55783728. Its totient is φ = 30990880.

The previous prime is 42612511. The next prime is 42612517. The reversal of 42612515 is 51521624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42612515 - 2² = 42612511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42612511) 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, 387332 + ... + 387441.

It is an arithmetic number, because the mean of its divisors is an integer number (6972966).

Almost surely, 2^42612515 is an apocalyptic number.

42612515 is a deficient number, since it is larger than the sum of its proper divisors (13171213).

42612515 is a wasteful number, since it uses less digits than its factorization.

42612515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774789.

The product of its digits is 2400, while the sum is 26.

The square root of 42612515 is about 6527.8262078582. The cubic root of 42612515 is about 349.2842925650.

It can be divided in two parts, 4261 and 2515, that added together give a palindrome (6776).

The spelling of 42612515 in words is "forty-two million, six hundred twelve thousand, five hundred fifteen".