140402000 has 40 divisors (see below), whose sum is σ = 339496872. Its totient is φ = 56160000.

The previous prime is 140401993. The next prime is 140402011. The reversal of 140402000 is 204041.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 140375104 = 164^2 + 11848^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33101 + ... + 37100.

Almost surely, 2^140402000 is an apocalyptic number.

140402000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140402000 is an abundant number, since it is smaller than the sum of its proper divisors (199094872).

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

140402000 is an equidigital number, since it uses as much as digits as its factorization.

140402000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70224 (or 70208 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 140402000 is about 11849.1349895256. The cubic root of 140402000 is about 519.7459311105.

Adding to 140402000 its reverse (204041), we get a palindrome (140606041).

The spelling of 140402000 in words is "one hundred forty million, four hundred two thousand".