140251402 has 4 divisors (see below), whose sum is σ = 210377106. Its totient is φ = 70125700.

The previous prime is 140251393. The next prime is 140251403. The reversal of 140251402 is 204152041.

140251402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204152041 = 107 ⋅1907963.

It can be written as a sum of positive squares in only one way, i.e., 109014481 + 31236921 = 10441^2 + 5589^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140251402.

It is not an unprimeable number, because it can be changed into a prime (140251403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35062849 + ... + 35062852.

Almost surely, 2^140251402 is an apocalyptic number.

140251402 is a deficient number, since it is larger than the sum of its proper divisors (70125704).

140251402 is an equidigital number, since it uses as much as digits as its factorization.

140251402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70125703.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 140251402 is about 11842.7784746655. The cubic root of 140251402 is about 519.5600346607.

The spelling of 140251402 in words is "one hundred forty million, two hundred fifty-one thousand, four hundred two".