140102149 has 6 divisors (see below), whose sum is σ = 153996710. Its totient is φ = 127365480.

The previous prime is 140102141. The next prime is 140102189. The reversal of 140102149 is 941201041.

It can be written as a sum of positive squares in only one way, i.e., 84971524 + 55130625 = 9218^2 + 7425^2 .

It is not a de Polignac number, because 140102149 - 2³ = 140102141 is a prime.

It is a super-2 number, since 2×140102149² = 39257224308836402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140102141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 578814 + ... + 579055.

Almost surely, 2^140102149 is an apocalyptic number.

It is an amenable number.

140102149 is a deficient number, since it is larger than the sum of its proper divisors (13894561).

140102149 is a wasteful number, since it uses less digits than its factorization.

140102149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157891 (or 1157880 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 140102149 is about 11836.4753622014. The cubic root of 140102149 is about 519.3756671210.

The spelling of 140102149 in words is "one hundred forty million, one hundred two thousand, one hundred forty-nine".