2429126981 has 2 divisors, whose sum is σ = 2429126982. Its totient is φ = 2429126980.

The previous prime is 2429126977. The next prime is 2429126993. The reversal of 2429126981 is 1896219242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1256064481 + 1173062500 = 35441^2 + 34250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2429126981 - 2² = 2429126977 is a prime.

It is a super-2 number, since 2×2429126981² = 11801315779644348722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2429126951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1214563490 + 1214563491.

It is an arithmetic number, because the mean of its divisors is an integer number (1214563491).

Almost surely, 2^2429126981 is an apocalyptic number.

It is an amenable number.

2429126981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2429126981 is an equidigital number, since it uses as much as digits as its factorization.

2429126981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The square root of 2429126981 is about 49286.1743392607. The cubic root of 2429126981 is about 1344.2604025634.

The spelling of 2429126981 in words is "two billion, four hundred twenty-nine million, one hundred twenty-six thousand, nine hundred eighty-one".