1228047142 has 16 divisors (see below), whose sum is σ = 2196755712. Its totient is φ = 503422920.

The previous prime is 1228047127. The next prime is 1228047151. The reversal of 1228047142 is 2417408221.

It is a congruent number.

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, 1906584 + ... + 1907227.

It is an arithmetic number, because the mean of its divisors is an integer number (137297232).

Almost surely, 2^1228047142 is an apocalyptic number.

1228047142 is a deficient number, since it is larger than the sum of its proper divisors (968708570).

1228047142 is a wasteful number, since it uses less digits than its factorization.

1228047142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813843.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 1228047142 is about 35043.5035634281. The cubic root of 1228047142 is about 1070.8739306721.

The spelling of 1228047142 in words is "one billion, two hundred twenty-eight million, forty-seven thousand, one hundred forty-two".