42404402455 has 32 divisors (see below), whose sum is σ = 54684564480. Its totient is φ = 31451159040.

The previous prime is 42404402449. The next prime is 42404402473. The reversal of 42404402455 is 55420440424.

It is not a de Polignac number, because 42404402455 - 2¹¹ = 42404400407 is a prime.

It is a super-2 number, since 2×42404402455² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42404402455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9406312 + ... + 9410818.

It is an arithmetic number, because the mean of its divisors is an integer number (1708892640).

Almost surely, 2^42404402455 is an apocalyptic number.

42404402455 is a deficient number, since it is larger than the sum of its proper divisors (12280162025).

42404402455 is a wasteful number, since it uses less digits than its factorization.

42404402455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159.

The product of its (nonzero) digits is 102400, while the sum is 34.

Adding to 42404402455 its reverse (55420440424), we get a palindrome (97824842879).

The spelling of 42404402455 in words is "forty-two billion, four hundred four million, four hundred two thousand, four hundred fifty-five".