1254342321045 has 24 divisors (see below), whose sum is σ = 2371847298912. Its totient is φ = 608165973600.

The previous prime is 1254342321041. The next prime is 1254342321047. The reversal of 1254342321045 is 5401232434521.

It is a happy number.

1254342321045 is a `hidden beast` number, since 1 + 2 + 5 + 434 + 2 + 3 + 210 + 4 + 5 = 666.

It is not a de Polignac number, because 1254342321045 - 2² = 1254342321041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254342321041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1267011951 + ... + 1267012940.

It is an arithmetic number, because the mean of its divisors is an integer number (98826970788).

Almost surely, 2^{1254342321045} is an apocalyptic number.

1254342321045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1254342321045 is a deficient number, since it is larger than the sum of its proper divisors (1117504977867).

1254342321045 is a wasteful number, since it uses less digits than its factorization.

1254342321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534024913 (or 2534024910 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 1254342321045 its reverse (5401232434521), we get a palindrome (6655574755566).

The spelling of 1254342321045 in words is "one trillion, two hundred fifty-four billion, three hundred forty-two million, three hundred twenty-one thousand, forty-five".