1240001929 has 2 divisors, whose sum is σ = 1240001930. Its totient is φ = 1240001928.

The previous prime is 1240001927. The next prime is 1240001941. The reversal of 1240001929 is 9291000421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1232010000 + 7991929 = 35100^2 + 2827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240001929 - 2¹ = 1240001927 is a prime.

Together with 1240001927, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1240001897 and 1240001906.

It is not a weakly prime, because it can be changed into another prime (1240001927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620000964 + 620000965.

It is an arithmetic number, because the mean of its divisors is an integer number (620000965).

Almost surely, 2^1240001929 is an apocalyptic number.

It is an amenable number.

1240001929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240001929 is an equidigital number, since it uses as much as digits as its factorization.

1240001929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1240001929 is about 35213.6611132668. The cubic root of 1240001929 is about 1074.3376280844.

The spelling of 1240001929 in words is "one billion, two hundred forty million, one thousand, nine hundred twenty-nine".