1542220 has 24 divisors (see below), whose sum is σ = 3351600. Its totient is φ = 595392.

The previous prime is 1542217. The next prime is 1542221. The reversal of 1542220 is 222451.

1542220 = T₂₀₁ + T₂₀₂ + ... + T₂₅₈.

It is a junction number, because it is equal to n+sod(n) for n = 1542194 and 1542203.

It is not an unprimeable number, because it can be changed into a prime (1542221) 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, 750 + ... + 1909.

It is an arithmetic number, because the mean of its divisors is an integer number (139650).

2^1542220 is an apocalyptic number.

1542220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1542220 is an abundant number, since it is smaller than the sum of its proper divisors (1809380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1542220 is a wasteful number, since it uses less digits than its factorization.

1542220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697 (or 2695 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1542220 is about 1241.8615059659. The cubic root of 1542220 is about 115.5354987927.

Adding to 1542220 its reverse (222451), we get a palindrome (1764671).

The spelling of 1542220 in words is "one million, five hundred forty-two thousand, two hundred twenty".