2420121642 has 16 divisors (see below), whose sum is σ = 4894629120. Its totient is φ = 797642912.

The previous prime is 2420121619. The next prime is 2420121643. The reversal of 2420121642 is 2461210242.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2420121643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2265498 + ... + 2266565.

It is an arithmetic number, because the mean of its divisors is an integer number (305914320).

Almost surely, 2^2420121642 is an apocalyptic number.

2420121642 is an abundant number, since it is smaller than the sum of its proper divisors (2474507478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2420121642 is a wasteful number, since it uses less digits than its factorization.

2420121642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532157.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 2420121642 is about 49194.7318520998. The cubic root of 2420121642 is about 1342.5971835088.

Adding to 2420121642 its reverse (2461210242), we get a palindrome (4881331884).

The spelling of 2420121642 in words is "two billion, four hundred twenty million, one hundred twenty-one thousand, six hundred forty-two".