1421159858 has 4 divisors (see below), whose sum is σ = 2131739790. Its totient is φ = 710579928.

The previous prime is 1421159851. The next prime is 1421159867. The reversal of 1421159858 is 8589511241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8589511241 = 19 ⋅452079539.

It can be written as a sum of positive squares in only one way, i.e., 1318198249 + 102961609 = 36307^2 + 10147^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1421159851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355289963 + ... + 355289966.

Almost surely, 2^1421159858 is an apocalyptic number.

1421159858 is a deficient number, since it is larger than the sum of its proper divisors (710579932).

1421159858 is an equidigital number, since it uses as much as digits as its factorization.

1421159858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710579931.

The product of its digits is 115200, while the sum is 44.

The square root of 1421159858 is about 37698.2739392668. The cubic root of 1421159858 is about 1124.2968071050.

The spelling of 1421159858 in words is "one billion, four hundred twenty-one million, one hundred fifty-nine thousand, eight hundred fifty-eight".