1421377 has 8 divisors (see below), whose sum is σ = 1535040. Its totient is φ = 1312080.

The previous prime is 1421351. The next prime is 1421389. The reversal of 1421377 is 7731241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1421377 - 2⁷ = 1421249 is a prime.

It is a super-2 number, since 2×1421377² = 4040625152258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 1 + 4⁸ + 2⁹ + 1 + 3¹² + 7³ + 7⁷ .

It is a Duffinian number.

1421377 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1421317) 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, 399 + ... + 1732.

It is an arithmetic number, because the mean of its divisors is an integer number (191880).

2^1421377 is an apocalyptic number.

It is an amenable number.

1421377 is a deficient number, since it is larger than the sum of its proper divisors (113663).

1421377 is a wasteful number, since it uses less digits than its factorization.

1421377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183.

The product of its digits is 1176, while the sum is 25.

The square root of 1421377 is about 1192.2151651443. The cubic root of 1421377 is about 112.4354065413.

The spelling of 1421377 in words is "one million, four hundred twenty-one thousand, three hundred seventy-seven".