40212520739 has 2 divisors, whose sum is σ = 40212520740. Its totient is φ = 40212520738.

The previous prime is 40212520729. The next prime is 40212520811. The reversal of 40212520739 is 93702521204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40212520739 - 2⁸ = 40212520483 is a prime.

It is a super-2 number, since 2×40212520739² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 40212520699 and 40212520708.

It is not a weakly prime, because it can be changed into another prime (40212520729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20106260369 + 20106260370.

It is an arithmetic number, because the mean of its divisors is an integer number (20106260370).

Almost surely, 2^40212520739 is an apocalyptic number.

40212520739 is a deficient number, since it is larger than the sum of its proper divisors (1).

40212520739 is an equidigital number, since it uses as much as digits as its factorization.

40212520739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 40212520739 in words is "forty billion, two hundred twelve million, five hundred twenty thousand, seven hundred thirty-nine".