1427390 has 16 divisors (see below), whose sum is σ = 2624832. Its totient is φ = 558624.

The previous prime is 1427389. The next prime is 1427399. The reversal of 1427390 is 937241.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049 + ... + 1988.

It is an arithmetic number, because the mean of its divisors is an integer number (164052).

2^1427390 is an apocalyptic number.

1427390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1427390 is a deficient number, since it is larger than the sum of its proper divisors (1197442).

1427390 is a wasteful number, since it uses less digits than its factorization.

1427390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1427390 is about 1194.7342800807. The cubic root of 1427390 is about 112.5937325819.

The spelling of 1427390 in words is "one million, four hundred twenty-seven thousand, three hundred ninety".