1742990 has 8 divisors (see below), whose sum is σ = 3137400. Its totient is φ = 697192.

The previous prime is 1742989. The next prime is 1742999. The reversal of 1742990 is 992471.

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 (1742999) 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, 87140 + ... + 87159.

It is an arithmetic number, because the mean of its divisors is an integer number (392175).

2^1742990 is an apocalyptic number.

1742990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1742990 is a deficient number, since it is larger than the sum of its proper divisors (1394410).

1742990 is a wasteful number, since it uses less digits than its factorization.

1742990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174306.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1742990 is about 1320.2234659329. The cubic root of 1742990 is about 120.3459921937.

The spelling of 1742990 in words is "one million, seven hundred forty-two thousand, nine hundred ninety".