1423539842 has 8 divisors (see below), whose sum is σ = 2147653116. Its totient is φ = 707655472.

The previous prime is 1423539839. The next prime is 1423539899. The reversal of 1423539842 is 2489353241.

It can be written as a sum of positive squares in 2 ways, for example, as 1079845321 + 343694521 = 32861^2 + 18539^2 .

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

It is a super-2 number, since 2×1423539842² = 4052931363522769928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1423539842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056793 + ... + 2057484.

Almost surely, 2^1423539842 is an apocalyptic number.

1423539842 is a deficient number, since it is larger than the sum of its proper divisors (724113274).

1423539842 is a wasteful number, since it uses less digits than its factorization.

1423539842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4114452.

The product of its digits is 207360, while the sum is 41.

The square root of 1423539842 is about 37729.8269542811. The cubic root of 1423539842 is about 1124.9240684883.

The spelling of 1423539842 in words is "one billion, four hundred twenty-three million, five hundred thirty-nine thousand, eight hundred forty-two".