1421240594 has 4 divisors (see below), whose sum is σ = 2131860894. Its totient is φ = 710620296.

The previous prime is 1421240551. The next prime is 1421240609. The reversal of 1421240594 is 4950421241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4950421241 = 787 ⋅6290243.

It can be written as a sum of positive squares in only one way, i.e., 1418501569 + 2739025 = 37663^2 + 1655^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1421240594.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355310147 + ... + 355310150.

Almost surely, 2^1421240594 is an apocalyptic number.

1421240594 is a deficient number, since it is larger than the sum of its proper divisors (710620300).

1421240594 is an equidigital number, since it uses as much as digits as its factorization.

1421240594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710620299.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1421240594 is about 37699.3447423161. The cubic root of 1421240594 is about 1124.3180971116.

The spelling of 1421240594 in words is "one billion, four hundred twenty-one million, two hundred forty thousand, five hundred ninety-four".