345142403 has 2 divisors, whose sum is σ = 345142404. Its totient is φ = 345142402.

The previous prime is 345142339. The next prime is 345142409. The reversal of 345142403 is 304241543.

It is a strong prime.

It is an emirp because it is prime and its reverse (304241543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345142403 - 2⁶ = 345142339 is a prime.

It is a super-2 number, since 2×345142403² = 238246556697228818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (345142409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172571201 + 172571202.

It is an arithmetic number, because the mean of its divisors is an integer number (172571202).

Almost surely, 2^345142403 is an apocalyptic number.

345142403 is a deficient number, since it is larger than the sum of its proper divisors (1).

345142403 is an equidigital number, since it uses as much as digits as its factorization.

345142403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 345142403 is about 18578.0085854216. The cubic root of 345142403 is about 701.4543931150.

Adding to 345142403 its reverse (304241543), we get a palindrome (649383946).

It can be divided in two parts, 3451 and 42403, that added together give a palindrome (45854).

The spelling of 345142403 in words is "three hundred forty-five million, one hundred forty-two thousand, four hundred three".