1234420102 has 4 divisors (see below), whose sum is σ = 1851630156. Its totient is φ = 617210050.

The previous prime is 1234420091. The next prime is 1234420123. The reversal of 1234420102 is 2010244321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1234420102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308605024 + ... + 308605027.

It is an arithmetic number, because the mean of its divisors is an integer number (462907539).

Almost surely, 2^1234420102 is an apocalyptic number.

1234420102 is a deficient number, since it is larger than the sum of its proper divisors (617210054).

1234420102 is an equidigital number, since it uses as much as digits as its factorization.

1234420102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617210053.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1234420102 is about 35134.3151633841. The cubic root of 1234420102 is about 1072.7231716091.

Adding to 1234420102 its reverse (2010244321), we get a palindrome (3244664423).

The spelling of 1234420102 in words is "one billion, two hundred thirty-four million, four hundred twenty thousand, one hundred two".