8240370121 has 16 divisors (see below), whose sum is σ = 8664192000. Its totient is φ = 7827422400.

The previous prime is 8240370107. The next prime is 8240370179. The reversal of 8240370121 is 1210730428.

It is a cyclic number.

It is not a de Polignac number, because 8240370121 - 2⁷ = 8240369993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8240370121.

It is not an unprimeable number, because it can be changed into a prime (8240370191) 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, 495855 + ... + 512203.

It is an arithmetic number, because the mean of its divisors is an integer number (541512000).

Almost surely, 2^8240370121 is an apocalyptic number.

It is an amenable number.

8240370121 is a deficient number, since it is larger than the sum of its proper divisors (423821879).

8240370121 is a wasteful number, since it uses less digits than its factorization.

8240370121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16680.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 8240370121 is about 90776.4844053789. The cubic root of 8240370121 is about 2019.8335092169.

The spelling of 8240370121 in words is "eight billion, two hundred forty million, three hundred seventy thousand, one hundred twenty-one".