1242212043 has 8 divisors (see below), whose sum is σ = 1656486400. Its totient is φ = 828039528.

The previous prime is 1242212009. The next prime is 1242212053. The reversal of 1242212043 is 3402122421.

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

It is not a de Polignac number, because 1242212043 - 2¹² = 1242207947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242212053) 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, 10098 + ... + 50856.

It is an arithmetic number, because the mean of its divisors is an integer number (207060800).

Almost surely, 2^1242212043 is an apocalyptic number.

1242212043 is a deficient number, since it is larger than the sum of its proper divisors (414274357).

1242212043 is a wasteful number, since it uses less digits than its factorization.

1242212043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50921.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1242212043 is about 35245.0286281626. The cubic root of 1242212043 is about 1074.9755301443.

Adding to 1242212043 its reverse (3402122421), we get a palindrome (4644334464).

The spelling of 1242212043 in words is "one billion, two hundred forty-two million, two hundred twelve thousand, forty-three".