1421137073 has 4 divisors (see below), whose sum is σ = 1451374080. Its totient is φ = 1390900068.

The previous prime is 1421137051. The next prime is 1421137079. The reversal of 1421137073 is 3707311241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3707311241 = 541 ⋅6852701.

It is a cyclic number.

It is not a de Polignac number, because 1421137073 - 2¹⁰ = 1421136049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1421137079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15118433 + ... + 15118526.

It is an arithmetic number, because the mean of its divisors is an integer number (362843520).

Almost surely, 2^1421137073 is an apocalyptic number.

It is an amenable number.

1421137073 is a deficient number, since it is larger than the sum of its proper divisors (30237007).

1421137073 is an equidigital number, since it uses as much as digits as its factorization.

1421137073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30237006.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1421137073 is about 37697.9717358905. The cubic root of 1421137073 is about 1124.2907985763.

The spelling of 1421137073 in words is "one billion, four hundred twenty-one million, one hundred thirty-seven thousand, seventy-three".