12040455 has 16 divisors (see below), whose sum is σ = 22017024. Its totient is φ = 5504160.

The previous prime is 12040421. The next prime is 12040463. The reversal of 12040455 is 55404021.

It is not a de Polignac number, because 12040455 - 2²¹ = 9943303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 57231 + ... + 57440.

It is an arithmetic number, because the mean of its divisors is an integer number (1376064).

Almost surely, 2^12040455 is an apocalyptic number.

12040455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12040455 is a deficient number, since it is larger than the sum of its proper divisors (9976569).

12040455 is a wasteful number, since it uses less digits than its factorization.

12040455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114686.

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

The square root of 12040455 is about 3469.9358783701. The cubic root of 12040455 is about 229.1998344647.

Adding to 12040455 its reverse (55404021), we get a palindrome (67444476).

The spelling of 12040455 in words is "twelve million, forty thousand, four hundred fifty-five".