40221321542939 has 2 divisors, whose sum is σ = 40221321542940. Its totient is φ = 40221321542938.

The previous prime is 40221321542827. The next prime is 40221321542993. The reversal of 40221321542939 is 93924512312204.

Together with next prime (40221321542993) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40221321542939 - 2¹² = 40221321538843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40221321542893 and 40221321542902.

It is not a weakly prime, because it can be changed into another prime (40221321142939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20110660771469 + 20110660771470.

It is an arithmetic number, because the mean of its divisors is an integer number (20110660771470).

Almost surely, 2^{40221321542939} is an apocalyptic number.

40221321542939 is a deficient number, since it is larger than the sum of its proper divisors (1).

40221321542939 is an equidigital number, since it uses as much as digits as its factorization.

40221321542939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 40221321542939 in words is "forty trillion, two hundred twenty-one billion, three hundred twenty-one million, five hundred forty-two thousand, nine hundred thirty-nine".