42343515 has 24 divisors (see below), whose sum is σ = 77714208. Its totient is φ = 21254400.

The previous prime is 42343501. The next prime is 42343517. The reversal of 42343515 is 51534324.

It is not a de Polignac number, because 42343515 - 2⁷ = 42343387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42343517) 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, 26911 + ... + 28440.

It is an arithmetic number, because the mean of its divisors is an integer number (3238092).

Almost surely, 2^42343515 is an apocalyptic number.

42343515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42343515 is a deficient number, since it is larger than the sum of its proper divisors (35370693).

42343515 is a wasteful number, since it uses less digits than its factorization.

42343515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55379 (or 55376 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 42343515 is about 6507.1894854845. The cubic root of 42343515 is about 348.5477649710.

Adding to 42343515 its reverse (51534324), we get a palindrome (93877839).

The spelling of 42343515 in words is "forty-two million, three hundred forty-three thousand, five hundred fifteen".