2420428991 has 2 divisors, whose sum is σ = 2420428992. Its totient is φ = 2420428990.

The previous prime is 2420428949. The next prime is 2420428993. The reversal of 2420428991 is 1998240242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2420428991 - 2²² = 2416234687 is a prime.

Together with 2420428993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2420428993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210214495 + 1210214496.

It is an arithmetic number, because the mean of its divisors is an integer number (1210214496).

Almost surely, 2^2420428991 is an apocalyptic number.

2420428991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2420428991 is an equidigital number, since it uses as much as digits as its factorization.

2420428991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 2420428991 is about 49197.8555528592. The cubic root of 2420428991 is about 1342.6540165246.

The spelling of 2420428991 in words is "two billion, four hundred twenty million, four hundred twenty-eight thousand, nine hundred ninety-one".