1242030291 has 8 divisors (see below), whose sum is σ = 1728042240. Its totient is φ = 792019272.

The previous prime is 1242030289. The next prime is 1242030313. The reversal of 1242030291 is 1920302421.

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

It is not a de Polignac number, because 1242030291 - 2¹ = 1242030289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242030271) 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, 9000151 + ... + 9000288.

It is an arithmetic number, because the mean of its divisors is an integer number (216005280).

Almost surely, 2^1242030291 is an apocalyptic number.

1242030291 is a deficient number, since it is larger than the sum of its proper divisors (486011949).

1242030291 is a wasteful number, since it uses less digits than its factorization.

1242030291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18000465.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1242030291 is about 35242.4501276515. The cubic root of 1242030291 is about 1074.9230998894.

The spelling of 1242030291 in words is "one billion, two hundred forty-two million, thirty thousand, two hundred ninety-one".