42002515 has 8 divisors (see below), whose sum is σ = 50486688. Its totient is φ = 33546240.

The previous prime is 42002509. The next prime is 42002539. The reversal of 42002515 is 51520024.

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

It is not a de Polignac number, because 42002515 - 2³ = 42002507 is a prime.

It is a super-2 number, since 2×42002515² = 3528422532650450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42002492 and 42002501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3502 + ... + 9811.

It is an arithmetic number, because the mean of its divisors is an integer number (6310836).

Almost surely, 2^42002515 is an apocalyptic number.

42002515 is a deficient number, since it is larger than the sum of its proper divisors (8484173).

42002515 is a wasteful number, since it uses less digits than its factorization.

42002515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13949.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 42002515 is about 6480.9347319658. The cubic root of 42002515 is about 347.6096026097.

Adding to 42002515 its reverse (51520024), we get a palindrome (93522539).

The spelling of 42002515 in words is "forty-two million, two thousand, five hundred fifteen".