140453242 has 4 divisors (see below), whose sum is σ = 210679866. Its totient is φ = 70226620.

The previous prime is 140453227. The next prime is 140453267. The reversal of 140453242 is 242354041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242354041 = 1789 ⋅135469.

It can be written as a sum of positive squares in only one way, i.e., 137100681 + 3352561 = 11709^2 + 1831^2 .

It is a super-2 number, since 2×140453242² = 39454226376621128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35113309 + ... + 35113312.

Almost surely, 2^140453242 is an apocalyptic number.

140453242 is a deficient number, since it is larger than the sum of its proper divisors (70226624).

140453242 is an equidigital number, since it uses as much as digits as its factorization.

140453242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70226623.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 140453242 is about 11851.2970598159. The cubic root of 140453242 is about 519.8091533382.

The spelling of 140453242 in words is "one hundred forty million, four hundred fifty-three thousand, two hundred forty-two".