42149403 has 10 divisors (see below), whose sum is σ = 62964044. Its totient is φ = 28099548.

The previous prime is 42149399. The next prime is 42149407. The reversal of 42149403 is 30494124.

It is an interprime number because it is at equal distance from previous prime (42149399) and next prime (42149407).

It is not a de Polignac number, because 42149403 - 2² = 42149399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42149407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 260101 + ... + 260262.

Almost surely, 2^42149403 is an apocalyptic number.

42149403 is a deficient number, since it is larger than the sum of its proper divisors (20814641).

42149403 is an equidigital number, since it uses as much as digits as its factorization.

42149403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520375 (or 520366 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42149403 is about 6492.2571575685. The cubic root of 42149403 is about 348.0143424529.

The spelling of 42149403 in words is "forty-two million, one hundred forty-nine thousand, four hundred three".