2420778254 has 4 divisors (see below), whose sum is σ = 3631167384. Its totient is φ = 1210389126.

The previous prime is 2420778247. The next prime is 2420778259. The reversal of 2420778254 is 4528770242.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420778259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605194562 + ... + 605194565.

It is an arithmetic number, because the mean of its divisors is an integer number (907791846).

Almost surely, 2^2420778254 is an apocalyptic number.

2420778254 is a deficient number, since it is larger than the sum of its proper divisors (1210389130).

2420778254 is a wasteful number, since it uses less digits than its factorization.

2420778254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210389129.

The product of its (nonzero) digits is 250880, while the sum is 41.

The square root of 2420778254 is about 49201.4050002640. The cubic root of 2420778254 is about 1342.7185941701.

The spelling of 2420778254 in words is "two billion, four hundred twenty million, seven hundred seventy-eight thousand, two hundred fifty-four".