1421751151 has 4 divisors (see below), whose sum is σ = 1423483704. Its totient is φ = 1420018600.

The previous prime is 1421751119. The next prime is 1421751161. The reversal of 1421751151 is 1511571241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1421751151 - 2⁵ = 1421751119 is a prime.

It is a pancake number, because a pancake can be divided into 1421751151 parts by 53324 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421751161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865045 + ... + 866686.

It is an arithmetic number, because the mean of its divisors is an integer number (355870926).

Almost surely, 2^1421751151 is an apocalyptic number.

1421751151 is a deficient number, since it is larger than the sum of its proper divisors (1732553).

1421751151 is an equidigital number, since it uses as much as digits as its factorization.

1421751151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732552.

The product of its digits is 1400, while the sum is 28.

The square root of 1421751151 is about 37706.1155649849. The cubic root of 1421751151 is about 1124.4527118405.

The spelling of 1421751151 in words is "one billion, four hundred twenty-one million, seven hundred fifty-one thousand, one hundred fifty-one".