1243402334 has 4 divisors (see below), whose sum is σ = 1865103504. Its totient is φ = 621701166.

The previous prime is 1243402331. The next prime is 1243402337. The reversal of 1243402334 is 4332043421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4332043421 = 31741 ⋅136481.

It is an interprime number because it is at equal distance from previous prime (1243402331) and next prime (1243402337).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243402331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310850582 + ... + 310850585.

It is an arithmetic number, because the mean of its divisors is an integer number (466275876).

Almost surely, 2^1243402334 is an apocalyptic number.

1243402334 is a deficient number, since it is larger than the sum of its proper divisors (621701170).

1243402334 is an equidigital number, since it uses as much as digits as its factorization.

1243402334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621701169.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 1243402334 is about 35261.9105267993. The cubic root of 1243402334 is about 1075.3187687079.

Adding to 1243402334 its reverse (4332043421), we get a palindrome (5575445755).

The spelling of 1243402334 in words is "one billion, two hundred forty-three million, four hundred two thousand, three hundred thirty-four".