1240506969 has 16 divisors (see below), whose sum is σ = 1789032000. Its totient is φ = 760049856.

The previous prime is 1240506937. The next prime is 1240506977. The reversal of 1240506969 is 9696050421.

It is a happy number.

It is not a de Polignac number, because 1240506969 - 2⁵ = 1240506937 is a prime.

It is a super-2 number, since 2×1240506969² = 3077715080275133922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1240506969.

It is not an unprimeable number, because it can be changed into a prime (1240506469) 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, 60519 + ... + 78380.

It is an arithmetic number, because the mean of its divisors is an integer number (111814500).

Almost surely, 2^1240506969 is an apocalyptic number.

It is an amenable number.

1240506969 is a deficient number, since it is larger than the sum of its proper divisors (548525031).

1240506969 is a wasteful number, since it uses less digits than its factorization.

1240506969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139144.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1240506969 is about 35220.8314637801. The cubic root of 1240506969 is about 1074.4834638332.

The spelling of 1240506969 in words is "one billion, two hundred forty million, five hundred six thousand, nine hundred sixty-nine".