1242269197 has 8 divisors (see below), whose sum is σ = 1341105080. Its totient is φ = 1143901440.

The previous prime is 1242269167. The next prime is 1242269219. The reversal of 1242269197 is 7919622421.

It can be written as a sum of positive squares in 4 ways, for example, as 33246756 + 1209022441 = 5766^2 + 34771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242269197 - 2⁷ = 1242269069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242269167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111504 + ... + 122137.

It is an arithmetic number, because the mean of its divisors is an integer number (167638135).

Almost surely, 2^1242269197 is an apocalyptic number.

It is an amenable number.

1242269197 is a deficient number, since it is larger than the sum of its proper divisors (98835883).

1242269197 is a wasteful number, since it uses less digits than its factorization.

1242269197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234063.

The product of its digits is 108864, while the sum is 43.

The square root of 1242269197 is about 35245.8394282219. The cubic root of 1242269197 is about 1074.9920163820.

The spelling of 1242269197 in words is "one billion, two hundred forty-two million, two hundred sixty-nine thousand, one hundred ninety-seven".