40013303421 has 144 divisors (see below), whose sum is σ = 69864000768. Its totient is φ = 20284992000.

The previous prime is 40013303401. The next prime is 40013303453. The reversal of 40013303421 is 12430331004.

It is not a de Polignac number, because 40013303421 - 2⁶ = 40013303357 is a prime.

It is a super-2 number, since 2×40013303421² (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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013303401) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 92838076 + ... + 92838506.

It is an arithmetic number, because the mean of its divisors is an integer number (485166672).

Almost surely, 2^40013303421 is an apocalyptic number.

It is an amenable number.

40013303421 is a deficient number, since it is larger than the sum of its proper divisors (29850697347).

40013303421 is a wasteful number, since it uses less digits than its factorization.

40013303421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 40013303421 its reverse (12430331004), we get a palindrome (52443634425).

The spelling of 40013303421 in words is "forty billion, thirteen million, three hundred three thousand, four hundred twenty-one".