1240430890 has 16 divisors (see below), whose sum is σ = 2284701408. Its totient is φ = 484633296.

The previous prime is 1240430881. The next prime is 1240430897. The reversal of 1240430890 is 980340421.

It is not an unprimeable number, because it can be changed into a prime (1240430897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1441932 + ... + 1442791.

It is an arithmetic number, because the mean of its divisors is an integer number (142793838).

Almost surely, 2^1240430890 is an apocalyptic number.

1240430890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240430890 is a deficient number, since it is larger than the sum of its proper divisors (1044270518).

1240430890 is a wasteful number, since it uses less digits than its factorization.

1240430890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884773.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1240430890 is about 35219.7514187707. The cubic root of 1240430890 is about 1074.4614977337.

The spelling of 1240430890 in words is "one billion, two hundred forty million, four hundred thirty thousand, eight hundred ninety".