140212530 has 48 divisors (see below), whose sum is σ = 368333784. Its totient is φ = 37002240.

The previous prime is 140212529. The next prime is 140212559. The reversal of 140212530 is 35212041.

140212530 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 63632529 + 76580001 = 7977^2 + 8751^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 700 + ... + 16760.

Almost surely, 2^140212530 is an apocalyptic number.

140212530 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 140212530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184166892).

140212530 is an abundant number, since it is smaller than the sum of its proper divisors (228121254).

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

140212530 is a wasteful number, since it uses less digits than its factorization.

140212530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16171 (or 16168 counting only the distinct ones).

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

The square root of 140212530 is about 11841.1371920099. The cubic root of 140212530 is about 519.5120299027.

Adding to 140212530 its reverse (35212041), we get a palindrome (175424571).

The spelling of 140212530 in words is "one hundred forty million, two hundred twelve thousand, five hundred thirty".