140820452 has 36 divisors (see below), whose sum is σ = 266209524. Its totient is φ = 65149440.

The previous prime is 140820451. The next prime is 140820461. The reversal of 140820452 is 254028041.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 13942756 + 126877696 = 3734^2 + 11264^2 .

It is not an unprimeable number, because it can be changed into a prime (140820451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69518 + ... + 71514.

It is an arithmetic number, because the mean of its divisors is an integer number (7394709).

Almost surely, 2^140820452 is an apocalyptic number.

It is an amenable number.

140820452 is a deficient number, since it is larger than the sum of its proper divisors (125389072).

140820452 is a wasteful number, since it uses less digits than its factorization.

140820452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096 (or 2077 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 140820452 is about 11866.7793440343. The cubic root of 140820452 is about 520.2617666274.

Adding to 140820452 its reverse (254028041), we get a palindrome (394848493).

The spelling of 140820452 in words is "one hundred forty million, eight hundred twenty thousand, four hundred fifty-two".