1421023547 has 8 divisors (see below), whose sum is σ = 1502350800. Its totient is φ = 1340349984.

The previous prime is 1421023543. The next prime is 1421023553. The reversal of 1421023547 is 7453201241.

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

It is not a de Polignac number, because 1421023547 - 2² = 1421023543 is a prime.

It is a super-2 number, since 2×1421023547² = 4038615842256922418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421023543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158948 + ... + 167649.

It is an arithmetic number, because the mean of its divisors is an integer number (187793850).

Almost surely, 2^1421023547 is an apocalyptic number.

1421023547 is a deficient number, since it is larger than the sum of its proper divisors (81327253).

1421023547 is a wasteful number, since it uses less digits than its factorization.

1421023547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326845.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1421023547 is about 37696.4659749425. The cubic root of 1421023547 is about 1124.2608601937.

Adding to 1421023547 its reverse (7453201241), we get a palindrome (8874224788).

The spelling of 1421023547 in words is "one billion, four hundred twenty-one million, twenty-three thousand, five hundred forty-seven".