40187407421 has 16 divisors (see below), whose sum is σ = 46565406720. Its totient is φ = 33971929200.

The previous prime is 40187407333. The next prime is 40187407427. The reversal of 40187407421 is 12470478104.

It is a cyclic number.

It is not a de Polignac number, because 40187407421 - 2³⁴ = 23007538237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40187407427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10160 + ... + 283686.

It is an arithmetic number, because the mean of its divisors is an integer number (2910337920).

Almost surely, 2^40187407421 is an apocalyptic number.

It is an amenable number.

40187407421 is a deficient number, since it is larger than the sum of its proper divisors (6377999299).

40187407421 is a wasteful number, since it uses less digits than its factorization.

40187407421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273824.

The product of its (nonzero) digits is 50176, while the sum is 38.

The spelling of 40187407421 in words is "forty billion, one hundred eighty-seven million, four hundred seven thousand, four hundred twenty-one".