1242034013 has 4 divisors (see below), whose sum is σ = 1354946208. Its totient is φ = 1129121820.

The previous prime is 1242033907. The next prime is 1242034039. The reversal of 1242034013 is 3104302421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3104302421 = 11 ⋅282209311.

It is a cyclic number.

It is not a de Polignac number, because 1242034013 - 2¹² = 1242029917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242034043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56456081 + ... + 56456102.

It is an arithmetic number, because the mean of its divisors is an integer number (338736552).

Almost surely, 2^1242034013 is an apocalyptic number.

It is an amenable number.

1242034013 is a deficient number, since it is larger than the sum of its proper divisors (112912195).

1242034013 is a wasteful number, since it uses less digits than its factorization.

1242034013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112912194.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1242034013 is about 35242.5029332481. The cubic root of 1242034013 is about 1074.9241736313.

Adding to 1242034013 its reverse (3104302421), we get a palindrome (4346336434).

The spelling of 1242034013 in words is "one billion, two hundred forty-two million, thirty-four thousand, thirteen".