40402451121 has 32 divisors (see below), whose sum is σ = 55012758528. Its totient is φ = 26371275840.

The previous prime is 40402451119. The next prime is 40402451137. The reversal of 40402451121 is 12115420404.

It is not a de Polignac number, because 40402451121 - 2¹ = 40402451119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40402451091 and 40402451100.

It is not an unprimeable number, because it can be changed into a prime (40402451161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10234270 + ... + 10238216.

It is an arithmetic number, because the mean of its divisors is an integer number (1719148704).

Almost surely, 2^40402451121 is an apocalyptic number.

It is an amenable number.

40402451121 is a deficient number, since it is larger than the sum of its proper divisors (14610307407).

40402451121 is a wasteful number, since it uses less digits than its factorization.

40402451121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 40402451121 its reverse (12115420404), we get a palindrome (52517871525).

The spelling of 40402451121 in words is "forty billion, four hundred two million, four hundred fifty-one thousand, one hundred twenty-one".