1380542 has 4 divisors (see below), whose sum is σ = 2070816. Its totient is φ = 690270.

The previous prime is 1380517. The next prime is 1380551. The reversal of 1380542 is 2450831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345134 + ... + 345137.

It is an arithmetic number, because the mean of its divisors is an integer number (517704).

2^1380542 is an apocalyptic number.

1380542 is a deficient number, since it is larger than the sum of its proper divisors (690274).

1380542 is an equidigital number, since it uses as much as digits as its factorization.

1380542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690273.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1380542 is about 1174.9646803202. The cubic root of 1380542 is about 111.3482018063.

The spelling of 1380542 in words is "one million, three hundred eighty thousand, five hundred forty-two".