1234267145 has 4 divisors (see below), whose sum is σ = 1481120580. Its totient is φ = 987413712.

The previous prime is 1234267121. The next prime is 1234267159. The reversal of 1234267145 is 5417624321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5417624321 = 107 ⋅50632003.

It can be written as a sum of positive squares in 2 ways, for example, as 933730249 + 300536896 = 30557^2 + 17336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234267145 - 2¹⁴ = 1234250761 is a prime.

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, 123426710 + ... + 123426719.

It is an arithmetic number, because the mean of its divisors is an integer number (370280145).

Almost surely, 2^1234267145 is an apocalyptic number.

It is an amenable number.

1234267145 is a deficient number, since it is larger than the sum of its proper divisors (246853435).

1234267145 is an equidigital number, since it uses as much as digits as its factorization.

1234267145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246853434.

The product of its digits is 40320, while the sum is 35.

The square root of 1234267145 is about 35132.1383493803. The cubic root of 1234267145 is about 1072.6788627347.

The spelling of 1234267145 in words is "one billion, two hundred thirty-four million, two hundred sixty-seven thousand, one hundred forty-five".