40234021401 has 16 divisors (see below), whose sum is σ = 61904221184. Its totient is φ = 22767655824.

The previous prime is 40234021379. The next prime is 40234021409. The reversal of 40234021401 is 10412043204.

It is not a de Polignac number, because 40234021401 - 2²⁷ = 40099803673 is a prime.

It is a super-2 number, since 2×40234021401² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40234021409) 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, 9298351 + ... + 9302676.

It is an arithmetic number, because the mean of its divisors is an integer number (3869013824).

Almost surely, 2^40234021401 is an apocalyptic number.

It is an amenable number.

40234021401 is a deficient number, since it is larger than the sum of its proper divisors (21670199783).

40234021401 is a wasteful number, since it uses less digits than its factorization.

40234021401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18601140.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40234021401 its reverse (10412043204), we get a palindrome (50646064605).

The spelling of 40234021401 in words is "forty billion, two hundred thirty-four million, twenty-one thousand, four hundred one".