140245523 has 4 divisors (see below), whose sum is σ = 152995128. Its totient is φ = 127495920.

The previous prime is 140245507. The next prime is 140245549. The reversal of 140245523 is 325542041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140245523 - 2⁴ = 140245507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140245492 and 140245501.

It is not an unprimeable number, because it can be changed into a prime (140245123) 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, 6374786 + ... + 6374807.

It is an arithmetic number, because the mean of its divisors is an integer number (38248782).

Almost surely, 2^140245523 is an apocalyptic number.

140245523 is a deficient number, since it is larger than the sum of its proper divisors (12749605).

140245523 is a wasteful number, since it uses less digits than its factorization.

140245523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12749604.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 140245523 is about 11842.5302617304. The cubic root of 140245523 is about 519.5527749920.

Adding to 140245523 its reverse (325542041), we get a palindrome (465787564).

The spelling of 140245523 in words is "one hundred forty million, two hundred forty-five thousand, five hundred twenty-three".