1236234490 has 8 divisors (see below), whose sum is σ = 2225222100. Its totient is φ = 494493792.

The previous prime is 1236234473. The next prime is 1236234497. The reversal of 1236234490 is 944326321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1152127249 + 84107241 = 33943^2 + 9171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1236234497) 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, 61811715 + ... + 61811734.

Almost surely, 2^1236234490 is an apocalyptic number.

1236234490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1236234490 is a deficient number, since it is larger than the sum of its proper divisors (988987610).

1236234490 is a wasteful number, since it uses less digits than its factorization.

1236234490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123623456.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 1236234490 is about 35160.1264218433. The cubic root of 1236234490 is about 1073.2484879716.

The spelling of 1236234490 in words is "one billion, two hundred thirty-six million, two hundred thirty-four thousand, four hundred ninety".