10400242 has 8 divisors (see below), whose sum is σ = 15657516. Its totient is φ = 5181072.

The previous prime is 10400231. The next prime is 10400249. The reversal of 10400242 is 24200401.

It can be written as a sum of positive squares in 2 ways, for example, as 9991921 + 408321 = 3161^2 + 639^2 .

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

It is not an unprimeable number, because it can be changed into a prime (10400249) 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, 8833 + ... + 9940.

Almost surely, 2^10400242 is an apocalyptic number.

10400242 is a deficient number, since it is larger than the sum of its proper divisors (5257274).

10400242 is a wasteful number, since it uses less digits than its factorization.

10400242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19052.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 10400242 is about 3224.9406196084. The cubic root of 10400242 is about 218.2802696573.

Adding to 10400242 its reverse (24200401), we get a palindrome (34600643).

The spelling of 10400242 in words is "ten million, four hundred thousand, two hundred forty-two".