1242492877 has 2 divisors, whose sum is σ = 1242492878. Its totient is φ = 1242492876.

The previous prime is 1242492871. The next prime is 1242492883. The reversal of 1242492877 is 7782942421.

It is a balanced prime because it is at equal distance from previous prime (1242492871) and next prime (1242492883).

It can be written as a sum of positive squares in only one way, i.e., 1174364361 + 68128516 = 34269^2 + 8254^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242492877 - 2⁷ = 1242492749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242492871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621246438 + 621246439.

It is an arithmetic number, because the mean of its divisors is an integer number (621246439).

Almost surely, 2^1242492877 is an apocalyptic number.

It is an amenable number.

1242492877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242492877 is an equidigital number, since it uses as much as digits as its factorization.

1242492877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 46.

The square root of 1242492877 is about 35249.0124258822. The cubic root of 1242492877 is about 1075.0565326679.

The spelling of 1242492877 in words is "one billion, two hundred forty-two million, four hundred ninety-two thousand, eight hundred seventy-seven".