1229054642 has 4 divisors (see below), whose sum is σ = 1843581966. Its totient is φ = 614527320.

The previous prime is 1229054639. The next prime is 1229054669. The reversal of 1229054642 is 2464509221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 810483961 + 418570681 = 28469^2 + 20459^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 307263659 + ... + 307263662.

Almost surely, 2^1229054642 is an apocalyptic number.

1229054642 is a deficient number, since it is larger than the sum of its proper divisors (614527324).

1229054642 is an equidigital number, since it uses as much as digits as its factorization.

1229054642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614527323.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1229054642 is about 35057.8756059177. The cubic root of 1229054642 is about 1071.1667018899.

The spelling of 1229054642 in words is "one billion, two hundred twenty-nine million, fifty-four thousand, six hundred forty-two".