1243214154550 has 12 divisors (see below), whose sum is σ = 2312378327556. Its totient is φ = 497285661800.

The previous prime is 1243214154529. The next prime is 1243214154551. The reversal of 1243214154550 is 554514123421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243214154551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12432141496 + ... + 12432141595.

It is an arithmetic number, because the mean of its divisors is an integer number (192698193963).

Almost surely, 2^{1243214154550} is an apocalyptic number.

1243214154550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243214154550 is a deficient number, since it is larger than the sum of its proper divisors (1069164173006).

1243214154550 is a wasteful number, since it uses less digits than its factorization.

1243214154550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24864283103 (or 24864283098 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 1243214154550 its reverse (554514123421), we get a palindrome (1797728277971).

The spelling of 1243214154550 in words is "one trillion, two hundred forty-three billion, two hundred fourteen million, one hundred fifty-four thousand, five hundred fifty".