1213042242 has 96 divisors (see below), whose sum is σ = 2673699840. Its totient is φ = 366634240.

The previous prime is 1213042211. The next prime is 1213042273. The reversal of 1213042242 is 2422403121.

It is an interprime number because it is at equal distance from previous prime (1213042211) and next prime (1213042273).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7263643 + ... + 7263809.

It is an arithmetic number, because the mean of its divisors is an integer number (27851040).

Almost surely, 2^1213042242 is an apocalyptic number.

1213042242 is an abundant number, since it is smaller than the sum of its proper divisors (1460657598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213042242 is a wasteful number, since it uses less digits than its factorization.

1213042242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 319 counting only the distinct ones).

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

The square root of 1213042242 is about 34828.7559640019. The cubic root of 1213042242 is about 1066.4945526768.

Adding to 1213042242 its reverse (2422403121), we get a palindrome (3635445363).

The spelling of 1213042242 in words is "one billion, two hundred thirteen million, forty-two thousand, two hundred forty-two".