402244140 has 48 divisors (see below), whose sum is σ = 1192538592. Its totient is φ = 100955136.

The previous prime is 402244121. The next prime is 402244147. The reversal of 402244140 is 41442204.

It is not an unprimeable number, because it can be changed into a prime (402244147) 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, 196159 + ... + 198198.

It is an arithmetic number, because the mean of its divisors is an integer number (24844554).

Almost surely, 2^402244140 is an apocalyptic number.

It is an amenable number.

402244140 is an abundant number, since it is smaller than the sum of its proper divisors (790294452).

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

402244140 is a wasteful number, since it uses less digits than its factorization.

402244140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394386 (or 394384 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 402244140 is about 20056.0250299006. The cubic root of 402244140 is about 738.1816446116.

Adding to 402244140 its reverse (41442204), we get a palindrome (443686344).

The spelling of 402244140 in words is "four hundred two million, two hundred forty-four thousand, one hundred forty".