42247372905 has 40 divisors (see below), whose sum is σ = 76027193352. Its totient is φ = 22444204032.

The previous prime is 42247372883. The next prime is 42247372987. The reversal of 42247372905 is 50927374224.

42247372905 is a `hidden beast` number, since 4 + 22 + 473 + 72 + 90 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7927587369 + 34319785536 = 89037^2 + 185256^2 .

It is not a de Polignac number, because 42247372905 - 2⁵ = 42247372873 is a prime.

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 39 ways as a sum of consecutive naturals, for example, 98862 + ... + 307031.

Almost surely, 2^42247372905 is an apocalyptic number.

42247372905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42247372905 is a deficient number, since it is larger than the sum of its proper divisors (33779820447).

42247372905 is a wasteful number, since it uses less digits than its factorization.

42247372905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406167 (or 406158 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 42247372905 in words is "forty-two billion, two hundred forty-seven million, three hundred seventy-two thousand, nine hundred five".