140145320 has 32 divisors (see below), whose sum is σ = 360374400. Its totient is φ = 48049728.

The previous prime is 140145287. The next prime is 140145329. The reversal of 140145320 is 23541041.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 140145292 and 140145301.

It is not an unprimeable number, because it can be changed into a prime (140145329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249980 + ... + 250539.

It is an arithmetic number, because the mean of its divisors is an integer number (11261700).

Almost surely, 2^140145320 is an apocalyptic number.

140145320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140145320 is an abundant number, since it is smaller than the sum of its proper divisors (220229080).

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

140145320 is a wasteful number, since it uses less digits than its factorization.

140145320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500537 (or 500533 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 140145320 is about 11838.2988642794. The cubic root of 140145320 is about 519.4290083544.

Adding to 140145320 its reverse (23541041), we get a palindrome (163686361).

The spelling of 140145320 in words is "one hundred forty million, one hundred forty-five thousand, three hundred twenty".