140520413749 has 2 divisors, whose sum is σ = 140520413750. Its totient is φ = 140520413748.

The previous prime is 140520413743. The next prime is 140520413773. The reversal of 140520413749 is 947314025041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102139685649 + 38380728100 = 319593^2 + 195910^2 .

It is an emirp because it is prime and its reverse (947314025041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140520413749 - 2³ = 140520413741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140520413741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70260206874 + 70260206875.

It is an arithmetic number, because the mean of its divisors is an integer number (70260206875).

Almost surely, 2^140520413749 is an apocalyptic number.

It is an amenable number.

140520413749 is a deficient number, since it is larger than the sum of its proper divisors (1).

140520413749 is an equidigital number, since it uses as much as digits as its factorization.

140520413749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 140520413749 in words is "one hundred forty billion, five hundred twenty million, four hundred thirteen thousand, seven hundred forty-nine".