1420669 has 8 divisors (see below), whose sum is σ = 1467648. Its totient is φ = 1374480.

The previous prime is 1420667. The next prime is 1420697. The reversal of 1420669 is 9660241.

1420669 = T₂₂₂ + T₂₂₃ + ... + T₂₆₈.

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 1420669 - 2¹ = 1420667 is a prime.

It is a super-2 number, since 2×1420669² = 4036600815122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420667) 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, 7759 + ... + 7939.

It is an arithmetic number, because the mean of its divisors is an integer number (183456).

2^1420669 is an apocalyptic number.

It is an amenable number.

1420669 is a deficient number, since it is larger than the sum of its proper divisors (46979).

1420669 is a wasteful number, since it uses less digits than its factorization.

1420669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1420669 is about 1191.9182018914. The cubic root of 1420669 is about 112.4167350960.

The spelling of 1420669 in words is "one million, four hundred twenty thousand, six hundred sixty-nine".