2394210021 has 48 divisors (see below), whose sum is σ = 3758607360. Its totient is φ = 1351620480.

The previous prime is 2394210017. The next prime is 2394210041. The reversal of 2394210021 is 1200124932.

It is not a de Polignac number, because 2394210021 - 2² = 2394210017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2394209973 and 2394210000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2394210041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7552555 + ... + 7552871.

It is an arithmetic number, because the mean of its divisors is an integer number (78304320).

Almost surely, 2^2394210021 is an apocalyptic number.

2394210021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2394210021 is a deficient number, since it is larger than the sum of its proper divisors (1364397339).

2394210021 is a wasteful number, since it uses less digits than its factorization.

2394210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2394210021 is about 48930.6654461188. The cubic root of 2394210021 is about 1337.7883657621.

Adding to 2394210021 its reverse (1200124932), we get a palindrome (3594334953).

The spelling of 2394210021 in words is "two billion, three hundred ninety-four million, two hundred ten thousand, twenty-one".