140740142 has 8 divisors (see below), whose sum is σ = 211321656. Its totient is φ = 70299592.

The previous prime is 140740121. The next prime is 140740147. The reversal of 140740142 is 241047041.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140740147) 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, 32708 + ... + 36759.

It is an arithmetic number, because the mean of its divisors is an integer number (26415207).

Almost surely, 2^140740142 is an apocalyptic number.

140740142 is a deficient number, since it is larger than the sum of its proper divisors (70581514).

140740142 is a wasteful number, since it uses less digits than its factorization.

140740142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70482.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 140740142 is about 11863.3950452642. The cubic root of 140740142 is about 520.1628459398.

Adding to 140740142 its reverse (241047041), we get a palindrome (381787183).

The spelling of 140740142 in words is "one hundred forty million, seven hundred forty thousand, one hundred forty-two".