140214120401981 has 2 divisors, whose sum is σ = 140214120401982. Its totient is φ = 140214120401980.

The previous prime is 140214120401947. The next prime is 140214120402017. The reversal of 140214120401981 is 189104021412041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111768431499481 + 28445688902500 = 10572059^2 + 5333450^2 .

It is an emirp because it is prime and its reverse (189104021412041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140214120401981 - 2²⁶ = 140214053293117 is a prime.

It is a super-2 number, since 2×140214120401981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140214120401281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70107060200990 + 70107060200991.

It is an arithmetic number, because the mean of its divisors is an integer number (70107060200991).

Almost surely, 2^{140214120401981} is an apocalyptic number.

It is an amenable number.

140214120401981 is a deficient number, since it is larger than the sum of its proper divisors (1).

140214120401981 is an equidigital number, since it uses as much as digits as its factorization.

140214120401981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 38.

The spelling of 140214120401981 in words is "one hundred forty trillion, two hundred fourteen billion, one hundred twenty million, four hundred one thousand, nine hundred eighty-one".