1420156 has 6 divisors (see below), whose sum is σ = 2485280. Its totient is φ = 710076.

The previous prime is 1420151. The next prime is 1420169. The reversal of 1420156 is 6510241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177516 + ... + 177523.

2^1420156 is an apocalyptic number.

It is an amenable number.

1420156 is a deficient number, since it is larger than the sum of its proper divisors (1065124).

1420156 is a wasteful number, since it uses less digits than its factorization.

1420156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355043 (or 355041 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1420156 is about 1191.7029831296. The cubic root of 1420156 is about 112.4032023336.

Adding to 1420156 its reverse (6510241), we get a palindrome (7930397).

The spelling of 1420156 in words is "one million, four hundred twenty thousand, one hundred fifty-six".