402240314021 has 8 divisors (see below), whose sum is σ = 495065001984. Its totient is φ = 318256072560.

The previous prime is 402240313957. The next prime is 402240314041. The reversal of 402240314021 is 120413042204.

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

It is a cyclic number.

It is not a de Polignac number, because 402240314021 - 2⁶ = 402240313957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402240314041) 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, 2210111525 + ... + 2210111706.

It is an arithmetic number, because the mean of its divisors is an integer number (61883125248).

Almost surely, 2^402240314021 is an apocalyptic number.

It is an amenable number.

402240314021 is a deficient number, since it is larger than the sum of its proper divisors (92824687963).

402240314021 is a wasteful number, since it uses less digits than its factorization.

402240314021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420223251.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 402240314021 its reverse (120413042204), we get a palindrome (522653356225).

The spelling of 402240314021 in words is "four hundred two billion, two hundred forty million, three hundred fourteen thousand, twenty-one".