140101397 has 4 divisors (see below), whose sum is σ = 141675660. Its totient is φ = 138527136.

The previous prime is 140101393. The next prime is 140101399. The reversal of 140101397 is 793101041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72352036 + 67749361 = 8506^2 + 8231^2 .

It is a cyclic number.

It is not a de Polignac number, because 140101397 - 2² = 140101393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140101393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786998 + ... + 787175.

It is an arithmetic number, because the mean of its divisors is an integer number (35418915).

Almost surely, 2^140101397 is an apocalyptic number.

It is an amenable number.

140101397 is a deficient number, since it is larger than the sum of its proper divisors (1574263).

140101397 is an equidigital number, since it uses as much as digits as its factorization.

140101397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574262.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 140101397 is about 11836.4435959455. The cubic root of 140101397 is about 519.3747378676.

The spelling of 140101397 in words is "one hundred forty million, one hundred one thousand, three hundred ninety-seven".