1243214012 has 24 divisors (see below), whose sum is σ = 2308977216. Its totient is φ = 583676928.

The previous prime is 1243214003. The next prime is 1243214051. The reversal of 1243214012 is 2104123421.

It is a super-2 number, since 2×1243214012² = 3091162159266272288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8333 + ... + 50555.

It is an arithmetic number, because the mean of its divisors is an integer number (96207384).

Almost surely, 2^1243214012 is an apocalyptic number.

It is an amenable number.

1243214012 is a deficient number, since it is larger than the sum of its proper divisors (1065763204).

1243214012 is a wasteful number, since it uses less digits than its factorization.

1243214012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42677 (or 42675 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1243214012 is about 35259.2400939101. The cubic root of 1243214012 is about 1075.2644777783.

Adding to 1243214012 its reverse (2104123421), we get a palindrome (3347337433).

The spelling of 1243214012 in words is "one billion, two hundred forty-three million, two hundred fourteen thousand, twelve".