42545723454 has 24 divisors (see below), whose sum is σ = 99273355272. Its totient is φ = 13090991760.

The previous prime is 42545723443. The next prime is 42545723491. The reversal of 42545723454 is 45432754524.

42545723454 is a `hidden beast` number, since 4 + 2 + 545 + 72 + 34 + 5 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90909432 + ... + 90909899.

It is an arithmetic number, because the mean of its divisors is an integer number (4136389803).

Almost surely, 2^42545723454 is an apocalyptic number.

42545723454 is an abundant number, since it is smaller than the sum of its proper divisors (56727631818).

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

42545723454 is a wasteful number, since it uses less digits than its factorization.

42545723454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181819352 (or 181819349 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 45.

The spelling of 42545723454 in words is "forty-two billion, five hundred forty-five million, seven hundred twenty-three thousand, four hundred fifty-four".