1430020442 has 4 divisors (see below), whose sum is σ = 2145030666. Its totient is φ = 715010220.

The previous prime is 1430020441. The next prime is 1430020451. The reversal of 1430020442 is 2440200341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2440200341 = 23 ⋅106095667.

It can be written as a sum of positive squares in only one way, i.e., 725171041 + 704849401 = 26929^2 + 26549^2 .

It is not an unprimeable number, because it can be changed into a prime (1430020441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357505109 + ... + 357505112.

Almost surely, 2^1430020442 is an apocalyptic number.

1430020442 is a deficient number, since it is larger than the sum of its proper divisors (715010224).

1430020442 is an equidigital number, since it uses as much as digits as its factorization.

1430020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715010223.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1430020442 is about 37815.6110885438. The cubic root of 1430020442 is about 1126.6285397078.

Adding to 1430020442 its reverse (2440200341), we get a palindrome (3870220783).

The spelling of 1430020442 in words is "one billion, four hundred thirty million, twenty thousand, four hundred forty-two".