42851015600121 has 24 divisors (see below), whose sum is σ = 62642202700896. Its totient is φ = 28222907731200.

The previous prime is 42851015600119. The next prime is 42851015600123. The reversal of 42851015600121 is 12100651015824.

42851015600121 is a `hidden beast` number, since 4 + 2 + 8 + 5 + 10 + 15 + 600 + 1 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (42851015600119) and next prime (42851015600123).

It is not a de Polignac number, because 42851015600121 - 2¹ = 42851015600119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42851015600123) 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, 124615401 + ... + 124958793.

It is an arithmetic number, because the mean of its divisors is an integer number (2610091779204).

Almost surely, 2^{42851015600121} is an apocalyptic number.

It is an amenable number.

42851015600121 is a deficient number, since it is larger than the sum of its proper divisors (19791187100775).

42851015600121 is a wasteful number, since it uses less digits than its factorization.

42851015600121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510533 (or 510530 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

Adding to 42851015600121 its reverse (12100651015824), we get a palindrome (54951666615945).

The spelling of 42851015600121 in words is "forty-two trillion, eight hundred fifty-one billion, fifteen million, six hundred thousand, one hundred twenty-one".