140709442 has 8 divisors (see below), whose sum is σ = 223479756. Its totient is φ = 66216192.

The previous prime is 140709407. The next prime is 140709449. The reversal of 140709442 is 244907041.

It can be written as a sum of positive squares in 2 ways, for example, as 125193721 + 15515721 = 11189^2 + 3939^2 .

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

It is not an unprimeable number, because it can be changed into a prime (140709449) 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, 2069223 + ... + 2069290.

Almost surely, 2^140709442 is an apocalyptic number.

140709442 is a deficient number, since it is larger than the sum of its proper divisors (82770314).

140709442 is a wasteful number, since it uses less digits than its factorization.

140709442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138532.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 140709442 is about 11862.1010786454. The cubic root of 140709442 is about 520.1250217142.

The spelling of 140709442 in words is "one hundred forty million, seven hundred nine thousand, four hundred forty-two".