1230771442 has 4 divisors (see below), whose sum is σ = 1846157166. Its totient is φ = 615385720.

The previous prime is 1230771433. The next prime is 1230771449. The reversal of 1230771442 is 2441770321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2441770321 = 23 ⋅106163927.

It can be written as a sum of positive squares in only one way, i.e., 774564561 + 456206881 = 27831^2 + 21359^2 .

It is not an unprimeable number, because it can be changed into a prime (1230771449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307692859 + ... + 307692862.

Almost surely, 2^1230771442 is an apocalyptic number.

1230771442 is a deficient number, since it is larger than the sum of its proper divisors (615385724).

1230771442 is an equidigital number, since it uses as much as digits as its factorization.

1230771442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615385723.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 1230771442 is about 35082.3522871543. The cubic root of 1230771442 is about 1071.6652214670.

The spelling of 1230771442 in words is "one billion, two hundred thirty million, seven hundred seventy-one thousand, four hundred forty-two".