42015524021 has 8 divisors (see below), whose sum is σ = 44826623424. Its totient is φ = 39242157760.

The previous prime is 42015524003. The next prime is 42015524041. The reversal of 42015524021 is 12042551024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42015524021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42015524041) 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, 9430985 + ... + 9435438.

It is an arithmetic number, because the mean of its divisors is an integer number (5603327928).

Almost surely, 2^42015524021 is an apocalyptic number.

It is an amenable number.

42015524021 is a deficient number, since it is larger than the sum of its proper divisors (2811099403).

42015524021 is a wasteful number, since it uses less digits than its factorization.

42015524021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18866571.

The product of its (nonzero) digits is 3200, while the sum is 26.

The spelling of 42015524021 in words is "forty-two billion, fifteen million, five hundred twenty-four thousand, twenty-one".