1520442 has 48 divisors (see below), whose sum is σ = 4110912. Its totient is φ = 394560.

The previous prime is 1520423. The next prime is 1520443. The reversal of 1520442 is 2440251.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1520443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 838 + ... + 1934.

It is an arithmetic number, because the mean of its divisors is an integer number (85644).

2^1520442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2055456).

1520442 is an abundant number, since it is smaller than the sum of its proper divisors (2590470).

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

1520442 is a wasteful number, since it uses less digits than its factorization.

1520442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1520442 is about 1233.0620422347. The cubic root of 1520442 is about 114.9890852905.

Adding to 1520442 its reverse (2440251), we get a palindrome (3960693).

The spelling of 1520442 in words is "one million, five hundred twenty thousand, four hundred forty-two".