1234839642 has 16 divisors (see below), whose sum is σ = 2614954752. Its totient is φ = 387400640.

The previous prime is 1234839637. The next prime is 1234839649. The reversal of 1234839642 is 2469384321.

It is a junction number, because it is equal to n+sod(n) for n = 1234839594 and 1234839603.

It is not an unprimeable number, because it can be changed into a prime (1234839649) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6053034 + ... + 6053237.

It is an arithmetic number, because the mean of its divisors is an integer number (163434672).

Almost surely, 2^1234839642 is an apocalyptic number.

1234839642 is an abundant number, since it is smaller than the sum of its proper divisors (1380115110).

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

1234839642 is a wasteful number, since it uses less digits than its factorization.

1234839642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12106293.

The product of its digits is 248832, while the sum is 42.

The square root of 1234839642 is about 35140.2851724342. The cubic root of 1234839642 is about 1072.8446859683.

The spelling of 1234839642 in words is "one billion, two hundred thirty-four million, eight hundred thirty-nine thousand, six hundred forty-two".