187290445742 has 16 divisors (see below), whose sum is σ = 294082596864. Its totient is φ = 89348007000.

The previous prime is 187290445717. The next prime is 187290445753. The reversal of 187290445742 is 247544092781.

It is a super-2 number, since 2×187290445742² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21268934 + ... + 21277737.

It is an arithmetic number, because the mean of its divisors is an integer number (18380162304).

Almost surely, 2^187290445742 is an apocalyptic number.

187290445742 is a deficient number, since it is larger than the sum of its proper divisors (106792151122).

187290445742 is a wasteful number, since it uses less digits than its factorization.

187290445742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42546775.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 187290445742 in words is "one hundred eighty-seven billion, two hundred ninety million, four hundred forty-five thousand, seven hundred forty-two".