1243290490 has 32 divisors (see below), whose sum is σ = 2413022976. Its totient is φ = 458498880.

The previous prime is 1243290473. The next prime is 1243290491. The reversal of 1243290490 is 940923421.

It is not an unprimeable number, because it can be changed into a prime (1243290491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109375 + ... + 120205.

It is an arithmetic number, because the mean of its divisors is an integer number (75406968).

Almost surely, 2^1243290490 is an apocalyptic number.

1243290490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243290490 is a deficient number, since it is larger than the sum of its proper divisors (1169732486).

1243290490 is a wasteful number, since it uses less digits than its factorization.

1243290490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11734.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1243290490 is about 35260.3245872751. The cubic root of 1243290490 is about 1075.2865261115.

The spelling of 1243290490 in words is "one billion, two hundred forty-three million, two hundred ninety thousand, four hundred ninety".