40421123745 has 8 divisors (see below), whose sum is σ = 64673798016. Its totient is φ = 21557932656.

The previous prime is 40421123741. The next prime is 40421123819. The reversal of 40421123745 is 54732112404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40421123745 - 2² = 40421123741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40421123741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347370777 + ... + 1347370806.

It is an arithmetic number, because the mean of its divisors is an integer number (8084224752).

Almost surely, 2^40421123745 is an apocalyptic number.

It is an amenable number.

40421123745 is a deficient number, since it is larger than the sum of its proper divisors (24252674271).

40421123745 is a wasteful number, since it uses less digits than its factorization.

40421123745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694741591.

The product of its (nonzero) digits is 26880, while the sum is 33.

The spelling of 40421123745 in words is "forty billion, four hundred twenty-one million, one hundred twenty-three thousand, seven hundred forty-five".