140521230 has 40 divisors (see below), whose sum is σ = 377848152. Its totient is φ = 37472112.

The previous prime is 140521229. The next prime is 140521253. The reversal of 140521230 is 32125041.

140521230 is a `hidden beast` number, since 140 + 521 + 2 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 85932 + ... + 87551.

Almost surely, 2^140521230 is an apocalyptic number.

140521230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140521230 is an abundant number, since it is smaller than the sum of its proper divisors (237326922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140521230 is a wasteful number, since it uses less digits than its factorization.

140521230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173502 (or 173493 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 140521230 is about 11854.1650908025. The cubic root of 140521230 is about 519.8930129994.

Adding to 140521230 its reverse (32125041), we get a palindrome (172646271).

The spelling of 140521230 in words is "one hundred forty million, five hundred twenty-one thousand, two hundred thirty".