1240424431 has 8 divisors (see below), whose sum is σ = 1370494944. Its totient is φ = 1116698880.

The previous prime is 1240424429. The next prime is 1240424461. The reversal of 1240424431 is 1344240421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240424431 - 2¹ = 1240424429 is a prime.

It is a super-2 number, since 2×1240424431² = 3077305538043347522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240424396 and 1240424405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240424411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585830 + ... + 1586611.

It is an arithmetic number, because the mean of its divisors is an integer number (171311868).

Almost surely, 2^1240424431 is an apocalyptic number.

1240424431 is a deficient number, since it is larger than the sum of its proper divisors (130070513).

1240424431 is a wasteful number, since it uses less digits than its factorization.

1240424431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172481.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1240424431 is about 35219.6597229445. The cubic root of 1240424431 is about 1074.4596328014.

Adding to 1240424431 its reverse (1344240421), we get a palindrome (2584664852).

The spelling of 1240424431 in words is "one billion, two hundred forty million, four hundred twenty-four thousand, four hundred thirty-one".