140402304 has 192 divisors, whose sum is σ = 482451840. Its totient is φ = 38320128.

The previous prime is 140402299. The next prime is 140402321. The reversal of 140402304 is 403204041.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185094 + ... + 185850.

It is an arithmetic number, because the mean of its divisors is an integer number (2512770).

Almost surely, 2^140402304 is an apocalyptic number.

140402304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140402304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241225920).

140402304 is an abundant number, since it is smaller than the sum of its proper divisors (342049536).

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

140402304 is a wasteful number, since it uses less digits than its factorization.

140402304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 792 counting only the distinct ones).

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

The square root of 140402304 is about 11849.1478174593. The cubic root of 140402304 is about 519.7463062302.

Adding to 140402304 its reverse (403204041), we get a palindrome (543606345).

The spelling of 140402304 in words is "one hundred forty million, four hundred two thousand, three hundred four".