140121739 has 2 divisors, whose sum is σ = 140121740. Its totient is φ = 140121738.

The previous prime is 140121733. The next prime is 140121757. The reversal of 140121739 is 937121041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140121739 - 2³ = 140121731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140121731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70060869 + 70060870.

It is an arithmetic number, because the mean of its divisors is an integer number (70060870).

Almost surely, 2^140121739 is an apocalyptic number.

140121739 is a deficient number, since it is larger than the sum of its proper divisors (1).

140121739 is an equidigital number, since it uses as much as digits as its factorization.

140121739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 140121739 is about 11837.3028600269. The cubic root of 140121739 is about 519.3998734952.

It can be divided in two parts, 14012 and 1739, that added together give a palindrome (15751).

The spelling of 140121739 in words is "one hundred forty million, one hundred twenty-one thousand, seven hundred thirty-nine".