1900442 has 4 divisors (see below), whose sum is σ = 2850666. Its totient is φ = 950220.

The previous prime is 1900441. The next prime is 1900463. The reversal of 1900442 is 2440091.

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

It can be written as a sum of positive squares in only one way, i.e., 1771561 + 128881 = 1331^2 + 359^2 .

It is a super-2 number, since 2×1900442² = 7223359590728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1900441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475109 + ... + 475112.

2^1900442 is an apocalyptic number.

1900442 is a deficient number, since it is larger than the sum of its proper divisors (950224).

1900442 is an equidigital number, since it uses as much as digits as its factorization.

1900442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950223.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1900442 is about 1378.5651961369. The cubic root of 1900442 is about 123.8658365087.

The spelling of 1900442 in words is "one million, nine hundred thousand, four hundred forty-two".