140720101 has 4 divisors (see below), whose sum is σ = 148997772. Its totient is φ = 132442432.

The previous prime is 140720089. The next prime is 140720113. The reversal of 140720101 is 101027041.

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

It is an interprime number because it is at equal distance from previous prime (140720089) and next prime (140720113).

It can be written as a sum of positive squares in 2 ways, for example, as 52548001 + 88172100 = 7249^2 + 9390^2 .

It is a cyclic number.

It is not a de Polignac number, because 140720101 - 2⁷ = 140719973 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 (140720171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4138810 + ... + 4138843.

It is an arithmetic number, because the mean of its divisors is an integer number (37249443).

Almost surely, 2^140720101 is an apocalyptic number.

It is an amenable number.

140720101 is a deficient number, since it is larger than the sum of its proper divisors (8277671).

140720101 is an equidigital number, since it uses as much as digits as its factorization.

140720101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8277670.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 140720101 is about 11862.5503581650. The cubic root of 140720101 is about 520.1381548595.

Adding to 140720101 its reverse (101027041), we get a palindrome (241747142).

The spelling of 140720101 in words is "one hundred forty million, seven hundred twenty thousand, one hundred one".