1240400202 has 8 divisors (see below), whose sum is σ = 2480800416. Its totient is φ = 413466732.

The previous prime is 1240400197. The next prime is 1240400297. The reversal of 1240400202 is 2020040421.

It is a sphenic number, since it is the product of 3 distinct primes.

1240400202 is an admirable number.

It is a super-2 number, since 2×1240400202² = 3077185322243281608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103366678 + ... + 103366689.

It is an arithmetic number, because the mean of its divisors is an integer number (310100052).

Almost surely, 2^1240400202 is an apocalyptic number.

1240400202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1240400202 is a wasteful number, since it uses less digits than its factorization.

1240400202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206733372.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1240400202 is about 35219.3157514453. The cubic root of 1240400202 is about 1074.4526370099.

Adding to 1240400202 its reverse (2020040421), we get a palindrome (3260440623).

The spelling of 1240400202 in words is "one billion, two hundred forty million, four hundred thousand, two hundred two".