140003778 has 16 divisors (see below), whose sum is σ = 280625760. Its totient is φ = 46564896.

The previous prime is 140003777. The next prime is 140003791. The reversal of 140003778 is 877300041.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (140003771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22788 + ... + 28271.

It is an arithmetic number, because the mean of its divisors is an integer number (17539110).

Almost surely, 2^140003778 is an apocalyptic number.

140003778 is an abundant number, since it is smaller than the sum of its proper divisors (140621982).

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

140003778 is a wasteful number, since it uses less digits than its factorization.

140003778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51521.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 140003778 is about 11832.3192147609. The cubic root of 140003778 is about 519.2540809152.

The spelling of 140003778 in words is "one hundred forty million, three thousand, seven hundred seventy-eight".