42091464780 has 192 divisors, whose sum is σ = 135862272000. Its totient is φ = 10805711616.

The previous prime is 42091464773. The next prime is 42091464787. The reversal of 42091464780 is 8746419024.

42091464780 is a `hidden beast` number, since 4 + 20 + 91 + 464 + 7 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (42091464773) and next prime (42091464787).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (42091464787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5618197 + ... + 5625683.

It is an arithmetic number, because the mean of its divisors is an integer number (707616000).

Almost surely, 2^42091464780 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 42091464780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67931136000).

42091464780 is an abundant number, since it is smaller than the sum of its proper divisors (93770807220).

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

42091464780 is a wasteful number, since it uses less digits than its factorization.

42091464780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7893 (or 7885 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 42091464780 in words is "forty-two billion, ninety-one million, four hundred sixty-four thousand, seven hundred eighty".