40342455 has 20 divisors (see below), whose sum is σ = 72318312. Its totient is φ = 21515760.

The previous prime is 40342441. The next prime is 40342481. The reversal of 40342455 is 55424304.

It is not a de Polignac number, because 40342455 - 2¹³ = 40334263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 49401 + ... + 50210.

Almost surely, 2^40342455 is an apocalyptic number.

40342455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40342455 is a deficient number, since it is larger than the sum of its proper divisors (31975857).

40342455 is an equidigital number, since it uses as much as digits as its factorization.

40342455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99628 (or 99619 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 40342455 is about 6351.5710654924. The cubic root of 40342455 is about 342.9684002769.

Adding to 40342455 its reverse (55424304), we get a palindrome (95766759).

The spelling of 40342455 in words is "forty million, three hundred forty-two thousand, four hundred fifty-five".