140515253428 has 24 divisors (see below), whose sum is σ = 268410621024. Its totient is φ = 63833848800.

The previous prime is 140515253419. The next prime is 140515253447. The reversal of 140515253428 is 824352515041.

It is a happy number.

140515253428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840550 + ... + 993757.

It is an arithmetic number, because the mean of its divisors is an integer number (11183775876).

Almost surely, 2^140515253428 is an apocalyptic number.

It is an amenable number.

140515253428 is a deficient number, since it is larger than the sum of its proper divisors (127895367596).

140515253428 is a wasteful number, since it uses less digits than its factorization.

140515253428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836063 (or 1836061 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 40.

Adding to 140515253428 its reverse (824352515041), we get a palindrome (964867768469).

The spelling of 140515253428 in words is "one hundred forty billion, five hundred fifteen million, two hundred fifty-three thousand, four hundred twenty-eight".