1142403 has 8 divisors (see below), whose sum is σ = 1531728. Its totient is φ = 757344.

The previous prime is 1142389. The next prime is 1142423. The reversal of 1142403 is 3042411.

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

It is not a de Polignac number, because 1142403 - 2¹⁰ = 1141379 is a prime.

It is a super-2 number, since 2×1142403² = 2610169228818, which contains 22 as substring.

1142403 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1142423) 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, 376 + ... + 1557.

It is an arithmetic number, because the mean of its divisors is an integer number (191466).

2^1142403 is an apocalyptic number.

1142403 is a deficient number, since it is larger than the sum of its proper divisors (389325).

1142403 is a wasteful number, since it uses less digits than its factorization.

1142403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1142403 is about 1068.8325406723. The cubic root of 1142403 is about 104.5377411506.

Adding to 1142403 its reverse (3042411), we get a palindrome (4184814).

The spelling of 1142403 in words is "one million, one hundred forty-two thousand, four hundred three".