2420634157 has 2 divisors, whose sum is σ = 2420634158. Its totient is φ = 2420634156.

The previous prime is 2420634119. The next prime is 2420634191. The reversal of 2420634157 is 7514360242.

It is an a-pointer prime, because the next prime (2420634191) can be obtained adding 2420634157 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2325747076 + 94887081 = 48226^2 + 9741^2 .

It is a cyclic number.

It is not a de Polignac number, because 2420634157 - 2¹⁹ = 2420109869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2420634457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210317078 + 1210317079.

It is an arithmetic number, because the mean of its divisors is an integer number (1210317079).

Almost surely, 2^2420634157 is an apocalyptic number.

It is an amenable number.

2420634157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2420634157 is an equidigital number, since it uses as much as digits as its factorization.

2420634157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 2420634157 is about 49199.9406198829. The cubic root of 2420634157 is about 1342.6919518344.

Adding to 2420634157 its reverse (7514360242), we get a palindrome (9934994399).

The spelling of 2420634157 in words is "two billion, four hundred twenty million, six hundred thirty-four thousand, one hundred fifty-seven".