140253785 has 8 divisors (see below), whose sum is σ = 192348096. Its totient is φ = 96174000.

The previous prime is 140253779. The next prime is 140253803. The reversal of 140253785 is 587352041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140253785 - 2⁴ = 140253769 is a prime.

It is a super-2 number, since 2×140253785² = 39342248413652450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 4007251 = 140253785 / (1 + 4 + 0 + 2 + 5 + 3 + 7 + 8 + 5).

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2003591 + ... + 2003660.

It is an arithmetic number, because the mean of its divisors is an integer number (24043512).

Almost surely, 2^140253785 is an apocalyptic number.

It is an amenable number.

140253785 is a deficient number, since it is larger than the sum of its proper divisors (52094311).

140253785 is an equidigital number, since it uses as much as digits as its factorization.

140253785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007263.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 140253785 is about 11842.8790840741. The cubic root of 140253785 is about 519.5629772446.

The spelling of 140253785 in words is "one hundred forty million, two hundred fifty-three thousand, seven hundred eighty-five".