1242222134 has 24 divisors (see below), whose sum is σ = 2015087760. Its totient is φ = 573605648.

The previous prime is 1242222083. The next prime is 1242222139. The reversal of 1242222134 is 4312222421.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242222139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10439 + ... + 50925.

It is an arithmetic number, because the mean of its divisors is an integer number (83961990).

Almost surely, 2^1242222134 is an apocalyptic number.

1242222134 is a deficient number, since it is larger than the sum of its proper divisors (772865626).

1242222134 is a wasteful number, since it uses less digits than its factorization.

1242222134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40564 (or 40541 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 1242222134 is about 35245.1717828130. The cubic root of 1242222134 is about 1074.9784409594.

Adding to 1242222134 its reverse (4312222421), we get a palindrome (5554444555).

The spelling of 1242222134 in words is "one billion, two hundred forty-two million, two hundred twenty-two thousand, one hundred thirty-four".