1420151273 has 4 divisors (see below), whose sum is σ = 1422446160. Its totient is φ = 1417856388.

The previous prime is 1420151267. The next prime is 1420151281. The reversal of 1420151273 is 3721510241.

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.

It is a cyclic number.

It is not a de Polignac number, because 1420151273 - 2⁶ = 1420151209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420150273) 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, 1146515 + ... + 1147752.

It is an arithmetic number, because the mean of its divisors is an integer number (355611540).

Almost surely, 2^1420151273 is an apocalyptic number.

It is an amenable number.

1420151273 is a deficient number, since it is larger than the sum of its proper divisors (2294887).

1420151273 is an equidigital number, since it uses as much as digits as its factorization.

1420151273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294886.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1420151273 is about 37684.8944936827. The cubic root of 1420151273 is about 1124.0307762181.

The spelling of 1420151273 in words is "one billion, four hundred twenty million, one hundred fifty-one thousand, two hundred seventy-three".