140420254 has 16 divisors (see below), whose sum is σ = 232964928. Its totient is φ = 63057312.

The previous prime is 140420249. The next prime is 140420261. The reversal of 140420254 is 452024041.

It is a happy number.

140420254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72022 + ... + 73945.

It is an arithmetic number, because the mean of its divisors is an integer number (14560308).

Almost surely, 2^140420254 is an apocalyptic number.

140420254 is a deficient number, since it is larger than the sum of its proper divisors (92544674).

140420254 is a wasteful number, since it uses less digits than its factorization.

140420254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146019.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 140420254 is about 11849.9052316886. The cubic root of 140420254 is about 519.7684546052.

Adding to 140420254 its reverse (452024041), we get a palindrome (592444295).

The spelling of 140420254 in words is "one hundred forty million, four hundred twenty thousand, two hundred fifty-four".