140902 has 4 divisors (see below), whose sum is σ = 211356. Its totient is φ = 70450.

The previous prime is 140897. The next prime is 140909. The reversal of 140902 is 209041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209041 = 7 ⋅29863.

It is an Ulam number.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140909) by changing a digit.

140902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35224 + ... + 35227.

It is an arithmetic number, because the mean of its divisors is an integer number (52839).

2¹⁴⁰⁹⁰² is an apocalyptic number.

140902 is a deficient number, since it is larger than the sum of its proper divisors (70454).

140902 is an equidigital number, since it uses as much as digits as its factorization.

140902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70453.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 140902 is about 375.3691516361. The cubic root of 140902 is about 52.0362173727.

Adding to 140902 its reverse (209041), we get a palindrome (349943).

The spelling of 140902 in words is "one hundred forty thousand, nine hundred two".