140128396 has 12 divisors (see below), whose sum is σ = 249851952. Its totient is φ = 68742128.

The previous prime is 140128393. The next prime is 140128403. The reversal of 140128396 is 693821041.

It is not an unprimeable number, because it can be changed into a prime (140128393) 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, 330280 + ... + 330703.

It is an arithmetic number, because the mean of its divisors is an integer number (20820996).

Almost surely, 2^140128396 is an apocalyptic number.

It is an amenable number.

140128396 is a deficient number, since it is larger than the sum of its proper divisors (109723556).

140128396 is a wasteful number, since it uses less digits than its factorization.

140128396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661040 (or 661038 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 140128396 is about 11837.5840440522. The cubic root of 140128396 is about 519.4080987005.

The spelling of 140128396 in words is "one hundred forty million, one hundred twenty-eight thousand, three hundred ninety-six".