140513530 has 8 divisors (see below), whose sum is σ = 252924372. Its totient is φ = 56205408.

The previous prime is 140513507. The next prime is 140513533. The reversal of 140513530 is 35315041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 139925241 + 588289 = 11829^2 + 767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×140513530² = 39488104226121800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140513533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7025667 + ... + 7025686.

Almost surely, 2^140513530 is an apocalyptic number.

140513530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140513530 is a deficient number, since it is larger than the sum of its proper divisors (112410842).

140513530 is a wasteful number, since it uses less digits than its factorization.

140513530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14051360.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 140513530 is about 11853.8403059937. The cubic root of 140513530 is about 519.8835168084.

Adding to 140513530 its reverse (35315041), we get a palindrome (175828571).

The spelling of 140513530 in words is "one hundred forty million, five hundred thirteen thousand, five hundred thirty".