15042305021 has 16 divisors (see below), whose sum is σ = 15941173248. Its totient is φ = 14177209200.

The previous prime is 15042304913. The next prime is 15042305023. The reversal of 15042305021 is 12050324051.

It is a cyclic number.

It is not a de Polignac number, because 15042305021 - 2¹⁴ = 15042288637 is a prime.

It is a super-3 number, since 3×15042305021³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15042305023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91076 + ... + 195906.

It is an arithmetic number, because the mean of its divisors is an integer number (996323328).

Almost surely, 2^15042305021 is an apocalyptic number.

It is an amenable number.

15042305021 is a deficient number, since it is larger than the sum of its proper divisors (898868227).

15042305021 is a wasteful number, since it uses less digits than its factorization.

15042305021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104992.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 15042305021 its reverse (12050324051), we get a palindrome (27092629072).

The spelling of 15042305021 in words is "fifteen billion, forty-two million, three hundred five thousand, twenty-one".