42342121024 has 56 divisors (see below), whose sum is σ = 98069034240. Its totient is φ = 17760516096.

The previous prime is 42342120853. The next prime is 42342121033. The reversal of 42342121024 is 42012124324.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×42342121024² (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 42342121024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984409 + ... + 1026520.

Almost surely, 2^42342121024 is an apocalyptic number.

It is an amenable number.

42342121024 is an abundant number, since it is smaller than the sum of its proper divisors (55726913216).

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

42342121024 is a wasteful number, since it uses less digits than its factorization.

42342121024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010995 (or 2010985 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 42342121024 its reverse (42012124324), we get a palindrome (84354245348).

The spelling of 42342121024 in words is "forty-two billion, three hundred forty-two million, one hundred twenty-one thousand, twenty-four".