40212979127 has 2 divisors, whose sum is σ = 40212979128. Its totient is φ = 40212979126.

The previous prime is 40212979117. The next prime is 40212979139. The reversal of 40212979127 is 72197921204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40212979127 - 2¹⁴ = 40212962743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40212979117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20106489563 + 20106489564.

It is an arithmetic number, because the mean of its divisors is an integer number (20106489564).

Almost surely, 2^40212979127 is an apocalyptic number.

40212979127 is a deficient number, since it is larger than the sum of its proper divisors (1).

40212979127 is an equidigital number, since it uses as much as digits as its factorization.

40212979127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 40212979127 in words is "forty billion, two hundred twelve million, nine hundred seventy-nine thousand, one hundred twenty-seven".