42291044450 has 54 divisors (see below), whose sum is σ = 79633337571. Its totient is φ = 16709928480.

The previous prime is 42291044441. The next prime is 42291044459. The reversal of 42291044450 is 5444019224.

It is an interprime number because it is at equal distance from previous prime (42291044441) and next prime (42291044459).

It can be written as a sum of positive squares in 5 ways, for example, as 35663944801 + 6627099649 = 188849^2 + 81407^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145415.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42291044450.

It is not an unprimeable number, because it can be changed into a prime (42291044459) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 184676936 + ... + 184677164.

Almost surely, 2^42291044450 is an apocalyptic number.

42291044450 is a deficient number, since it is larger than the sum of its proper divisors (37342293121).

42291044450 is an equidigital number, since it uses as much as digits as its factorization.

42291044450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 42291044450 in words is "forty-two billion, two hundred ninety-one million, forty-four thousand, four hundred fifty".