42297615 has 24 divisors (see below), whose sum is σ = 77629968. Its totient is φ = 21231360.

The previous prime is 42297599. The next prime is 42297617. The reversal of 42297615 is 51679224.

It is not a de Polignac number, because 42297615 - 2⁴ = 42297599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42297615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42297617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26881 + ... + 28410.

It is an arithmetic number, because the mean of its divisors is an integer number (3234582).

Almost surely, 2^42297615 is an apocalyptic number.

42297615 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42297615 is a deficient number, since it is larger than the sum of its proper divisors (35332353).

42297615 is a wasteful number, since it uses less digits than its factorization.

42297615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55319 (or 55316 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 42297615 is about 6503.6616609415. The cubic root of 42297615 is about 348.4217785275.

The spelling of 42297615 in words is "forty-two million, two hundred ninety-seven thousand, six hundred fifteen".