1420454 has 16 divisors (see below), whose sum is σ = 2450976. Its totient is φ = 604800.

The previous prime is 1420429. The next prime is 1420483. The reversal of 1420454 is 4540241.

It is a super-2 number, since 2×1420454² = 4035379132232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3164 + ... + 3584.

It is an arithmetic number, because the mean of its divisors is an integer number (153186).

2^1420454 is an apocalyptic number.

1420454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1420454 is a deficient number, since it is larger than the sum of its proper divisors (1030522).

1420454 is a wasteful number, since it uses less digits than its factorization.

1420454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1420454 is about 1191.8280077259. The cubic root of 1420454 is about 112.4110638670.

Adding to 1420454 its reverse (4540241), we get a palindrome (5960695).

It can be divided in two parts, 1420 and 454, that multiplied together give a triangular number (644680 = T₁₁₃₅).

The spelling of 1420454 in words is "one million, four hundred twenty thousand, four hundred fifty-four".