140298442 has 4 divisors (see below), whose sum is σ = 210447666. Its totient is φ = 70149220.

The previous prime is 140298437. The next prime is 140298449. The reversal of 140298442 is 244892041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 133841761 + 6456681 = 11569^2 + 2541^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140298398 and 140298407.

It is not an unprimeable number, because it can be changed into a prime (140298449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35074609 + ... + 35074612.

Almost surely, 2^140298442 is an apocalyptic number.

140298442 is a deficient number, since it is larger than the sum of its proper divisors (70149224).

140298442 is an equidigital number, since it uses as much as digits as its factorization.

140298442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70149223.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 140298442 is about 11844.7643285968. The cubic root of 140298442 is about 519.6181145843.

The spelling of 140298442 in words is "one hundred forty million, two hundred ninety-eight thousand, four hundred forty-two".