402422000020 has 24 divisors (see below), whose sum is σ = 845138947968. Its totient is φ = 160958752800.

The previous prime is 402422000017. The next prime is 402422000021. The reversal of 402422000020 is 20000224204.

It is a super-2 number, since 2×402422000020² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402421999958 and 402422000003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402422000021) 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 7 ways as a sum of consecutive naturals, for example, 295216 + ... + 944455.

It is an arithmetic number, because the mean of its divisors is an integer number (35214122832).

Almost surely, 2^402422000020 is an apocalyptic number.

It is an amenable number.

402422000020 is an abundant number, since it is smaller than the sum of its proper divisors (442716947948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402422000020 is a wasteful number, since it uses less digits than its factorization.

402422000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255911 (or 1255909 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 402422000020 its reverse (20000224204), we get a palindrome (422422224224).

The spelling of 402422000020 in words is "four hundred two billion, four hundred twenty-two million, twenty", and thus it is an aban number.