40003133421 has 16 divisors (see below), whose sum is σ = 54712486080. Its totient is φ = 25983031680.

The previous prime is 40003133411. The next prime is 40003133441. The reversal of 40003133421 is 12433130004.

It is not a de Polignac number, because 40003133421 - 2¹⁷ = 40003002349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40003133411) 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, 129150 + ... + 310943.

It is an arithmetic number, because the mean of its divisors is an integer number (3419530380).

Almost surely, 2^40003133421 is an apocalyptic number.

40003133421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40003133421 is a deficient number, since it is larger than the sum of its proper divisors (14709352659).

40003133421 is a wasteful number, since it uses less digits than its factorization.

40003133421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440876.

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

Adding to 40003133421 its reverse (12433130004), we get a palindrome (52436263425).

The spelling of 40003133421 in words is "forty billion, three million, one hundred thirty-three thousand, four hundred twenty-one".