1351264123 has 4 divisors (see below), whose sum is σ = 1474106328. Its totient is φ = 1228421920.

The previous prime is 1351264093. The next prime is 1351264129. The reversal of 1351264123 is 3214621531.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1351264123 - 2⁹ = 1351263611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1351264091 and 1351264100.

It is not an unprimeable number, because it can be changed into a prime (1351264129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61421086 + ... + 61421107.

It is an arithmetic number, because the mean of its divisors is an integer number (368526582).

Almost surely, 2^1351264123 is an apocalyptic number.

1351264123 is a deficient number, since it is larger than the sum of its proper divisors (122842205).

1351264123 is a wasteful number, since it uses less digits than its factorization.

1351264123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122842204.

The product of its digits is 4320, while the sum is 28.

The square root of 1351264123 is about 36759.5446516956. The cubic root of 1351264123 is about 1105.5543100439.

Adding to 1351264123 its reverse (3214621531), we get a palindrome (4565885654).

The spelling of 1351264123 in words is "one billion, three hundred fifty-one million, two hundred sixty-four thousand, one hundred twenty-three".