1226521042 has 16 divisors (see below), whose sum is σ = 1858176000. Its totient is φ = 607149648.

The previous prime is 1226521039. The next prime is 1226521081. The reversal of 1226521042 is 2401256221.

It is a junction number, because it is equal to n+sod(n) for n = 1226520998 and 1226521016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121908 + ... + 131584.

It is an arithmetic number, because the mean of its divisors is an integer number (116136000).

Almost surely, 2^1226521042 is an apocalyptic number.

1226521042 is a deficient number, since it is larger than the sum of its proper divisors (631654958).

1226521042 is a wasteful number, since it uses less digits than its factorization.

1226521042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1226521042 is about 35021.7224305145. The cubic root of 1226521042 is about 1070.4301534247.

Adding to 1226521042 its reverse (2401256221), we get a palindrome (3627777263).

The spelling of 1226521042 in words is "one billion, two hundred twenty-six million, five hundred twenty-one thousand, forty-two".