1204151405 has 4 divisors (see below), whose sum is σ = 1444981692. Its totient is φ = 963321120.

The previous prime is 1204151401. The next prime is 1204151411. The reversal of 1204151405 is 5041514021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5041514021 = 5701 ⋅884321.

It can be written as a sum of positive squares in 2 ways, for example, as 873675364 + 330476041 = 29558^2 + 18179^2 .

It is not a de Polignac number, because 1204151405 - 2² = 1204151401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204151401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120415136 + ... + 120415145.

It is an arithmetic number, because the mean of its divisors is an integer number (361245423).

Almost surely, 2^1204151405 is an apocalyptic number.

It is an amenable number.

1204151405 is a deficient number, since it is larger than the sum of its proper divisors (240830287).

1204151405 is an equidigital number, since it uses as much as digits as its factorization.

1204151405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240830286.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1204151405 is about 34700.8847869907. The cubic root of 1204151405 is about 1063.8825826885.

Adding to 1204151405 its reverse (5041514021), we get a palindrome (6245665426).

The spelling of 1204151405 in words is "one billion, two hundred four million, one hundred fifty-one thousand, four hundred five".