1421151 has 8 divisors (see below), whose sum is σ = 1900464. Its totient is φ = 944640.

The previous prime is 1421141. The next prime is 1421153. The reversal of 1421151 is 1511241.

It is a happy number.

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

It is not a de Polignac number, because 1421151 - 2¹⁸ = 1159007 is a prime.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 1421151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421153) 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, 1321 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (237558).

2^1421151 is an apocalyptic number.

1421151 is a deficient number, since it is larger than the sum of its proper divisors (479313).

1421151 is an equidigital number, since it uses as much as digits as its factorization.

1421151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401.

The product of its digits is 40, while the sum is 15.

The square root of 1421151 is about 1192.1203798275. The cubic root of 1421151 is about 112.4294471210.

Adding to 1421151 its reverse (1511241), we get a palindrome (2932392).

The spelling of 1421151 in words is "one million, four hundred twenty-one thousand, one hundred fifty-one".