42400455 has 16 divisors (see below), whose sum is σ = 68465760. Its totient is φ = 22405248.

The previous prime is 42400427. The next prime is 42400459. The reversal of 42400455 is 55400424.

It is not a de Polignac number, because 42400455 - 2¹³ = 42392263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42400459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11332 + ... + 14601.

It is an arithmetic number, because the mean of its divisors is an integer number (4279110).

Almost surely, 2^42400455 is an apocalyptic number.

42400455 is a deficient number, since it is larger than the sum of its proper divisors (26065305).

42400455 is a wasteful number, since it uses less digits than its factorization.

42400455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26050.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 42400455 is about 6511.5631763809. The cubic root of 42400455 is about 348.7039275734.

Adding to 42400455 its reverse (55400424), we get a palindrome (97800879).

The spelling of 42400455 in words is "forty-two million, four hundred thousand, four hundred fifty-five".