1240466129 has 16 divisors (see below), whose sum is σ = 1493385600. Its totient is φ = 1006556544.

The previous prime is 1240466119. The next prime is 1240466131. The reversal of 1240466129 is 9216640421.

It is not a de Polignac number, because 1240466129 - 2¹² = 1240462033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240466119) 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, 247157 + ... + 252125.

It is an arithmetic number, because the mean of its divisors is an integer number (93336600).

Almost surely, 2^1240466129 is an apocalyptic number.

1240466129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1240466129 is a deficient number, since it is larger than the sum of its proper divisors (252919471).

1240466129 is a wasteful number, since it uses less digits than its factorization.

1240466129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1240466129 is about 35220.2516884817. The cubic root of 1240466129 is about 1074.4716723138.

The spelling of 1240466129 in words is "one billion, two hundred forty million, four hundred sixty-six thousand, one hundred twenty-nine".