42487091730 has 128 divisors (see below), whose sum is σ = 122890037760. Its totient is φ = 10403297280.

The previous prime is 42487091729. The next prime is 42487091821. The reversal of 42487091730 is 3719078424.

42487091730 is a `hidden beast` number, since 424 + 8 + 70 + 91 + 73 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75307 + ... + 301073.

It is an arithmetic number, because the mean of its divisors is an integer number (960078420).

Almost surely, 2^42487091730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42487091730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61445018880).

42487091730 is an abundant number, since it is smaller than the sum of its proper divisors (80402946030).

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

42487091730 is a wasteful number, since it uses less digits than its factorization.

42487091730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225841 (or 225835 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 42487091730 in words is "forty-two billion, four hundred eighty-seven million, ninety-one thousand, seven hundred thirty".