40402401 has 8 divisors (see below), whose sum is σ = 58013760. Its totient is φ = 24862992.

The previous prime is 40402399. The next prime is 40402403. The reversal of 40402401 is 10420404.

It is an interprime number because it is at equal distance from previous prime (40402399) and next prime (40402403).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40402401 - 2¹ = 40402399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40402403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517941 + ... + 518018.

It is an arithmetic number, because the mean of its divisors is an integer number (7251720).

Almost surely, 2^40402401 is an apocalyptic number.

It is an amenable number.

40402401 is a deficient number, since it is larger than the sum of its proper divisors (17611359).

40402401 is a wasteful number, since it uses less digits than its factorization.

40402401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035975.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40402401 is about 6356.2883037194. The cubic root of 40402401 is about 343.1381917019.

Adding to 40402401 its reverse (10420404), we get a palindrome (50822805).

It can be divided in two parts, 4040 and 2401, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 40402401 in words is "forty million, four hundred two thousand, four hundred one".