1400423424021 has 16 divisors (see below), whose sum is σ = 2074721197120. Its totient is φ = 933606693360.

The previous prime is 1400423423977. The next prime is 1400423424061. The reversal of 1400423424021 is 1204243240041.

1400423424021 is a `hidden beast` number, since 1 + 400 + 4 + 234 + 2 + 4 + 0 + 21 = 666.

It is not a de Polignac number, because 1400423424021 - 2³³ = 1391833489429 is a prime.

It is a super-2 number, since 2×1400423424021² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400423424061) 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 15 ways as a sum of consecutive naturals, for example, 3878826 + ... + 4224468.

It is an arithmetic number, because the mean of its divisors is an integer number (129670074820).

Almost surely, 2^{1400423424021} is an apocalyptic number.

It is an amenable number.

1400423424021 is a deficient number, since it is larger than the sum of its proper divisors (674297773099).

1400423424021 is a wasteful number, since it uses less digits than its factorization.

1400423424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495713 (or 495707 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 1400423424021 its reverse (1204243240041), we get a palindrome (2604666664062).

The spelling of 1400423424021 in words is "one trillion, four hundred billion, four hundred twenty-three million, four hundred twenty-four thousand, twenty-one".