1243213042 has 8 divisors (see below), whose sum is σ = 1871701632. Its totient is φ = 619312500.

The previous prime is 1243213019. The next prime is 1243213063. The reversal of 1243213042 is 2403123421.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146334 + ... + 1147417.

It is an arithmetic number, because the mean of its divisors is an integer number (233962704).

Almost surely, 2^1243213042 is an apocalyptic number.

1243213042 is a deficient number, since it is larger than the sum of its proper divisors (628488590).

1243213042 is a wasteful number, since it uses less digits than its factorization.

1243213042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294024.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1243213042 is about 35259.2263386479. The cubic root of 1243213042 is about 1075.2641981250.

Adding to 1243213042 its reverse (2403123421), we get a palindrome (3646336463).

The spelling of 1243213042 in words is "one billion, two hundred forty-three million, two hundred thirteen thousand, forty-two".