140557530 has 64 divisors (see below), whose sum is σ = 359251200. Its totient is φ = 35073024.

The previous prime is 140557523. The next prime is 140557567. The reversal of 140557530 is 35755041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99771 + ... + 101169.

It is an arithmetic number, because the mean of its divisors is an integer number (5613300).

Almost surely, 2^140557530 is an apocalyptic number.

140557530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140557530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179625600).

140557530 is an abundant number, since it is smaller than the sum of its proper divisors (218693670).

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

140557530 is a wasteful number, since it uses less digits than its factorization.

140557530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 140557530 is about 11855.6960993440. The cubic root of 140557530 is about 519.9377760851.

The spelling of 140557530 in words is "one hundred forty million, five hundred fifty-seven thousand, five hundred thirty".