1240665701 has 16 divisors (see below), whose sum is σ = 1417868928. Its totient is φ = 1074585600.

The previous prime is 1240665697. The next prime is 1240665731. The reversal of 1240665701 is 1075660421.

It is not a de Polignac number, because 1240665701 - 2² = 1240665697 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240665731) 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, 55481 + ... + 74561.

It is an arithmetic number, because the mean of its divisors is an integer number (88616808).

Almost surely, 2^1240665701 is an apocalyptic number.

1240665701 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1240665701 is a deficient number, since it is larger than the sum of its proper divisors (177203227).

1240665701 is a wasteful number, since it uses less digits than its factorization.

1240665701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19372.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1240665701 is about 35223.0847740512. The cubic root of 1240665701 is about 1074.5292912353.

The spelling of 1240665701 in words is "one billion, two hundred forty million, six hundred sixty-five thousand, seven hundred one".