42449211072 has 168 divisors, whose sum is σ = 129774702096. Its totient is φ = 13219774464.

The previous prime is 42449211047. The next prime is 42449211073. The reversal of 42449211072 is 27011294424.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (42449211073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1325683 + ... + 1357325.

Almost surely, 2^42449211072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42449211072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64887351048).

42449211072 is an abundant number, since it is smaller than the sum of its proper divisors (87325491024).

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

42449211072 is a wasteful number, since it uses less digits than its factorization.

42449211072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31815 (or 31802 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 42449211072 in words is "forty-two billion, four hundred forty-nine million, two hundred eleven thousand, seventy-two".