140246549 has 4 divisors (see below), whose sum is σ = 148496364. Its totient is φ = 131996736.

The previous prime is 140246531. The next prime is 140246569. The reversal of 140246549 is 945642041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945642041 = 37 ⋅25557893.

It can be written as a sum of positive squares in 2 ways, for example, as 63123025 + 77123524 = 7945^2 + 8782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140246549 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 (140246569) 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, 4124882 + ... + 4124915.

It is an arithmetic number, because the mean of its divisors is an integer number (37124091).

Almost surely, 2^140246549 is an apocalyptic number.

It is an amenable number.

140246549 is a deficient number, since it is larger than the sum of its proper divisors (8249815).

140246549 is an equidigital number, since it uses as much as digits as its factorization.

140246549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8249814.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 140246549 is about 11842.5735800965. The cubic root of 140246549 is about 519.5540419602.

The spelling of 140246549 in words is "one hundred forty million, two hundred forty-six thousand, five hundred forty-nine".