1242123342 has 16 divisors (see below), whose sum is σ = 2526353280. Its totient is φ = 407023352.

The previous prime is 1242123341. The next prime is 1242123367. The reversal of 1242123342 is 2433212421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242123341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754058 + ... + 1754765.

It is an arithmetic number, because the mean of its divisors is an integer number (157897080).

Almost surely, 2^1242123342 is an apocalyptic number.

1242123342 is an abundant number, since it is smaller than the sum of its proper divisors (1284229938).

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

1242123342 is a wasteful number, since it uses less digits than its factorization.

1242123342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508887.

The product of its digits is 2304, while the sum is 24.

The square root of 1242123342 is about 35243.7702580187. The cubic root of 1242123342 is about 1074.9499430811.

Adding to 1242123342 its reverse (2433212421), we get a palindrome (3675335763).

The spelling of 1242123342 in words is "one billion, two hundred forty-two million, one hundred twenty-three thousand, three hundred forty-two".