1212234738 has 32 divisors (see below), whose sum is σ = 2848329792. Its totient is φ = 339086400.

The previous prime is 1212234731. The next prime is 1212234743. The reversal of 1212234738 is 8374322121.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1212234699 and 1212234708.

It is not an unprimeable number, because it can be changed into a prime (1212234731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705573 + ... + 707288.

It is an arithmetic number, because the mean of its divisors is an integer number (89010306).

Almost surely, 2^1212234738 is an apocalyptic number.

1212234738 is an abundant number, since it is smaller than the sum of its proper divisors (1636095054).

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

1212234738 is a wasteful number, since it uses less digits than its factorization.

1212234738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412890.

The product of its digits is 16128, while the sum is 33.

The square root of 1212234738 is about 34817.1615442730. The cubic root of 1212234738 is about 1066.2578503445.

Adding to 1212234738 its reverse (8374322121), we get a palindrome (9586556859).

The spelling of 1212234738 in words is "one billion, two hundred twelve million, two hundred thirty-four thousand, seven hundred thirty-eight".