10420390 has 8 divisors (see below), whose sum is σ = 18756720. Its totient is φ = 4168152.

The previous prime is 10420381. The next prime is 10420393. The reversal of 10420390 is 9302401.

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 (10420393) 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, 521010 + ... + 521029.

It is an arithmetic number, because the mean of its divisors is an integer number (2344590).

Almost surely, 2^10420390 is an apocalyptic number.

10420390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10420390 is a deficient number, since it is larger than the sum of its proper divisors (8336330).

10420390 is a wasteful number, since it uses less digits than its factorization.

10420390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042046.

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

The square root of 10420390 is about 3228.0628866241. The cubic root of 10420390 is about 218.4211341345.

Adding to 10420390 its reverse (9302401), we get a palindrome (19722791).

The spelling of 10420390 in words is "ten million, four hundred twenty thousand, three hundred ninety".