1240090236 has 288 divisors, whose sum is σ = 4146024960. Its totient is φ = 320876640.

The previous prime is 1240090219. The next prime is 1240090277. The reversal of 1240090236 is 6320900421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4715041 + ... + 4715303.

It is an arithmetic number, because the mean of its divisors is an integer number (14395920).

Almost surely, 2^1240090236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240090236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2073012480).

1240090236 is an abundant number, since it is smaller than the sum of its proper divisors (2905934724).

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

1240090236 is a wasteful number, since it uses less digits than its factorization.

1240090236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1240090236 is about 35214.9149651110. The cubic root of 1240090236 is about 1074.3631305396.

Adding to 1240090236 its reverse (6320900421), we get a palindrome (7560990657).

The spelling of 1240090236 in words is "one billion, two hundred forty million, ninety thousand, two hundred thirty-six".