1042390 has 8 divisors (see below), whose sum is σ = 1876320. Its totient is φ = 416952.

The previous prime is 1042381. The next prime is 1042399. The reversal of 1042390 is 932401.

It is an interprime number because it is at equal distance from previous prime (1042381) and next prime (1042399).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52110 + ... + 52129.

It is an arithmetic number, because the mean of its divisors is an integer number (234540).

2^1042390 is an apocalyptic number.

1042390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1042390 is a deficient number, since it is larger than the sum of its proper divisors (833930).

1042390 is a wasteful number, since it uses less digits than its factorization.

1042390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104246.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1042390 is about 1020.9750241803. The cubic root of 1042390 is about 101.3934916143.

Adding to 1042390 its reverse (932401), we get a palindrome (1974791).

The spelling of 1042390 in words is "one million, forty-two thousand, three hundred ninety".