140020430 has 16 divisors (see below), whose sum is σ = 274949424. Its totient is φ = 50916480.

The previous prime is 140020429. The next prime is 140020451. The reversal of 140020430 is 34020041.

It is a Curzon number.

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, 636347 + ... + 636566.

It is an arithmetic number, because the mean of its divisors is an integer number (17184339).

Almost surely, 2^140020430 is an apocalyptic number.

140020430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140020430 is a deficient number, since it is larger than the sum of its proper divisors (134928994).

140020430 is a wasteful number, since it uses less digits than its factorization.

140020430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272931.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 140020430 is about 11833.0228597768. The cubic root of 140020430 is about 519.2746667315.

Adding to 140020430 its reverse (34020041), we get a palindrome (174040471).

The spelling of 140020430 in words is "one hundred forty million, twenty thousand, four hundred thirty".