4242121401 has 32 divisors (see below), whose sum is σ = 6893752320. Its totient is φ = 2265037056.

The previous prime is 4242121399. The next prime is 4242121439. The reversal of 4242121401 is 1041212424.

It is not a de Polignac number, because 4242121401 - 2¹ = 4242121399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4242121201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6880 + ... + 92366.

It is an arithmetic number, because the mean of its divisors is an integer number (215429760).

Almost surely, 2^4242121401 is an apocalyptic number.

It is an amenable number.

4242121401 is a deficient number, since it is larger than the sum of its proper divisors (2651630919).

4242121401 is a wasteful number, since it uses less digits than its factorization.

4242121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85653.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 4242121401 is about 65131.5699258048. The cubic root of 4242121401 is about 1618.8043559194.

Adding to 4242121401 its reverse (1041212424), we get a palindrome (5283333825).

The spelling of 4242121401 in words is "four billion, two hundred forty-two million, one hundred twenty-one thousand, four hundred one".