42404220402042 has 64 divisors (see below), whose sum is σ = 87951681402624. Its totient is φ = 13618349337600.

The previous prime is 42404220402001. The next prime is 42404220402073. The reversal of 42404220402042 is 24020402240424.

It is a happy number.

It is a super-2 number, since 2×42404220402042² (a number of 28 digits) contains 22 as substring.

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, 439825042 + ... + 439921442.

It is an arithmetic number, because the mean of its divisors is an integer number (1374245021916).

Almost surely, 2^{42404220402042} is an apocalyptic number.

42404220402042 is an abundant number, since it is smaller than the sum of its proper divisors (45547461000582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42404220402042 is a wasteful number, since it uses less digits than its factorization.

42404220402042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115783.

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 42404220402042 its reverse (24020402240424), we get a palindrome (66424622642466).

The spelling of 42404220402042 in words is "forty-two trillion, four hundred four billion, two hundred twenty million, four hundred two thousand, forty-two".