40120455 has 16 divisors (see below), whose sum is σ = 64288224. Its totient is φ = 21365760.

The previous prime is 40120397. The next prime is 40120463. The reversal of 40120455 is 55402104.

It is not a de Polignac number, because 40120455 - 2¹² = 40116359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11295 + ... + 14415.

It is an arithmetic number, because the mean of its divisors is an integer number (4018014).

Almost surely, 2^40120455 is an apocalyptic number.

40120455 is a deficient number, since it is larger than the sum of its proper divisors (24167769).

40120455 is a wasteful number, since it uses less digits than its factorization.

40120455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40120455 is about 6334.0709658165. The cubic root of 40120455 is about 342.3381372382.

Adding to 40120455 its reverse (55402104), we get a palindrome (95522559).

The spelling of 40120455 in words is "forty million, one hundred twenty thousand, four hundred fifty-five".