1241423129 has 2 divisors, whose sum is σ = 1241423130. Its totient is φ = 1241423128.

The previous prime is 1241423107. The next prime is 1241423153. The reversal of 1241423129 is 9213241421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 883456729 + 357966400 = 29723^2 + 18920^2 .

It is an emirp because it is prime and its reverse (9213241421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241423129 is a prime.

It is a super-2 number, since 2×1241423129² = 3082262770432301282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1241428129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620711564 + 620711565.

It is an arithmetic number, because the mean of its divisors is an integer number (620711565).

Almost surely, 2^1241423129 is an apocalyptic number.

It is an amenable number.

1241423129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241423129 is an equidigital number, since it uses as much as digits as its factorization.

1241423129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 1241423129 is about 35233.8350027357. The cubic root of 1241423129 is about 1074.7479139212.

The spelling of 1241423129 in words is "one billion, two hundred forty-one million, four hundred twenty-three thousand, one hundred twenty-nine".