1420870 has 16 divisors (see below), whose sum is σ = 2790288. Its totient is φ = 516640.

The previous prime is 1420847. The next prime is 1420879. The reversal of 1420870 is 780241.

1420870 = 31² + 32² + ... + 162².

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420879) by changing a digit.

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, 6349 + ... + 6568.

It is an arithmetic number, because the mean of its divisors is an integer number (174393).

2^1420870 is an apocalyptic number.

1420870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1420870 is a deficient number, since it is larger than the sum of its proper divisors (1369418).

1420870 is a wasteful number, since it uses less digits than its factorization.

1420870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12935.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1420870 is about 1192.0025167759. The cubic root of 1420870 is about 112.4220365181.

The spelling of 1420870 in words is "one million, four hundred twenty thousand, eight hundred seventy".