1240403030 has 32 divisors (see below), whose sum is σ = 2355091200. Its totient is φ = 469076832.

The previous prime is 1240403029. The next prime is 1240403033. The reversal of 1240403030 is 303040421.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240403033) 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, 89081 + ... + 102059.

It is an arithmetic number, because the mean of its divisors is an integer number (73596600).

Almost surely, 2^1240403030 is an apocalyptic number.

1240403030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240403030 is a deficient number, since it is larger than the sum of its proper divisors (1114688170).

1240403030 is a wasteful number, since it uses less digits than its factorization.

1240403030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13508.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1240403030 is about 35219.3558998458. The cubic root of 1240403030 is about 1074.4534535609.

Adding to 1240403030 its reverse (303040421), we get a palindrome (1543443451).

The spelling of 1240403030 in words is "one billion, two hundred forty million, four hundred three thousand, thirty".