1430320040 has 32 divisors (see below), whose sum is σ = 3219470280. Its totient is φ = 571905792.

The previous prime is 1430320037. The next prime is 1430320069. The reversal of 1430320040 is 400230341.

It can be written as a sum of positive squares in 4 ways, for example, as 1425968644 + 4351396 = 37762^2 + 2086^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131282 + ... + 141758.

Almost surely, 2^1430320040 is an apocalyptic number.

1430320040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1430320040 is an abundant number, since it is smaller than the sum of its proper divisors (1789150240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1430320040 is a wasteful number, since it uses less digits than its factorization.

1430320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13901 (or 13897 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1430320040 is about 37819.5721816099. The cubic root of 1430320040 is about 1126.7072127296.

Adding to 1430320040 its reverse (400230341), we get a palindrome (1830550381).

It can be divided in two parts, 14303 and 20040, that added together give a palindrome (34343).

The spelling of 1430320040 in words is "one billion, four hundred thirty million, three hundred twenty thousand, forty".