140424381 has 8 divisors (see below), whose sum is σ = 208036160. Its totient is φ = 93616236.

The previous prime is 140424377. The next prime is 140424397. The reversal of 140424381 is 183424041.

It is not a de Polignac number, because 140424381 - 2² = 140424377 is a prime.

It is a super-2 number, since 2×140424381² = 39438013558466322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5200903 = 140424381 / (1 + 4 + 0 + 4 + 2 + 4 + 3 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140424331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2600425 + ... + 2600478.

It is an arithmetic number, because the mean of its divisors is an integer number (26004520).

Almost surely, 2^140424381 is an apocalyptic number.

It is an amenable number.

140424381 is a deficient number, since it is larger than the sum of its proper divisors (67611779).

140424381 is an equidigital number, since it uses as much as digits as its factorization.

140424381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200912 (or 5200906 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 140424381 is about 11850.0793668228. The cubic root of 140424381 is about 519.7735466137.

The spelling of 140424381 in words is "one hundred forty million, four hundred twenty-four thousand, three hundred eighty-one".