1240330666 has 16 divisors (see below), whose sum is σ = 1914874560. Its totient is φ = 602300160.

The previous prime is 1240330661. The next prime is 1240330681. The reversal of 1240330666 is 6660330421.

It is a super-2 number, since 2×1240330666² = 3076840322040007112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1240330661) 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, 55671 + ... + 74698.

It is an arithmetic number, because the mean of its divisors is an integer number (119679660).

Almost surely, 2^1240330666 is an apocalyptic number.

1240330666 is a deficient number, since it is larger than the sum of its proper divisors (674543894).

1240330666 is a wasteful number, since it uses less digits than its factorization.

1240330666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130509.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 1240330666 is about 35218.3285520480. The cubic root of 1240330666 is about 1074.4325589377.

It can be divided in two parts, 1240330 and 666, that added together give a square (1240996 = 1114²).

The spelling of 1240330666 in words is "one billion, two hundred forty million, three hundred thirty thousand, six hundred sixty-six".