140430402 has 32 divisors (see below), whose sum is σ = 356649600. Its totient is φ = 40122864.

The previous prime is 140430401. The next prime is 140430431. The reversal of 140430402 is 204034041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (140430401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185377 + ... + 186132.

It is an arithmetic number, because the mean of its divisors is an integer number (11145300).

Almost surely, 2^140430402 is an apocalyptic number.

140430402 is an abundant number, since it is smaller than the sum of its proper divisors (216219198).

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

140430402 is a wasteful number, since it uses less digits than its factorization.

140430402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371527 (or 371521 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 140430402 is about 11850.3334130310. Note that the first 3 decimals coincide. The cubic root of 140430402 is about 519.7809753137.

Adding to 140430402 its reverse (204034041), we get a palindrome (344464443).

The spelling of 140430402 in words is "one hundred forty million, four hundred thirty thousand, four hundred two".