1242762369 has 8 divisors (see below), whose sum is σ = 1663132032. Its totient is φ = 825450480.

The previous prime is 1242762349. The next prime is 1242762377. The reversal of 1242762369 is 9632672421.

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

It is not a de Polignac number, because 1242762369 - 2⁵ = 1242762337 is a prime.

It is a super-2 number, since 2×1242762369² = 3088916611604984322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1242762369.

It is not an unprimeable number, because it can be changed into a prime (1242762349) 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, 763494 + ... + 765119.

It is an arithmetic number, because the mean of its divisors is an integer number (207891504).

Almost surely, 2^1242762369 is an apocalyptic number.

It is an amenable number.

1242762369 is a deficient number, since it is larger than the sum of its proper divisors (420369663).

1242762369 is a wasteful number, since it uses less digits than its factorization.

1242762369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528887.

The product of its digits is 217728, while the sum is 42.

The square root of 1242762369 is about 35252.8349072809. The cubic root of 1242762369 is about 1075.1342522794.

The spelling of 1242762369 in words is "one billion, two hundred forty-two million, seven hundred sixty-two thousand, three hundred sixty-nine".