40042044420042 has 32 divisors (see below), whose sum is σ = 92380043745792. Its totient is φ = 11333662771824.

The previous prime is 40042044420031. The next prime is 40042044420107. The reversal of 40042044420042 is 24002444024004.

It is a junction number, because it is equal to n+sod(n) for n = 40042044419991 and 40042044420009.

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, 4455051628 + ... + 4455060615.

It is an arithmetic number, because the mean of its divisors is an integer number (2886876367056).

Almost surely, 2^{40042044420042} is an apocalyptic number.

40042044420042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40042044420042 is an abundant number, since it is smaller than the sum of its proper divisors (52337999325750).

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

40042044420042 is a wasteful number, since it uses less digits than its factorization.

40042044420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8910112362.

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

Adding to 40042044420042 its reverse (24002444024004), we get a palindrome (64044488444046).

The spelling of 40042044420042 in words is "forty trillion, forty-two billion, forty-four million, four hundred twenty thousand, forty-two".