42149397 has 8 divisors (see below), whose sum is σ = 56969344. Its totient is φ = 27714528.

The previous prime is 42149389. The next prime is 42149399. The reversal of 42149397 is 79394124.

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

It is not a de Polignac number, because 42149397 - 2³ = 42149389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42149399) 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, 96013 + ... + 96450.

It is an arithmetic number, because the mean of its divisors is an integer number (7121168).

Almost surely, 2^42149397 is an apocalyptic number.

It is an amenable number.

42149397 is a deficient number, since it is larger than the sum of its proper divisors (14819947).

42149397 is a wasteful number, since it uses less digits than its factorization.

42149397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192539.

The product of its digits is 54432, while the sum is 39.

The square root of 42149397 is about 6492.2566954796. The cubic root of 42149397 is about 348.0143259395.

The spelling of 42149397 in words is "forty-two million, one hundred forty-nine thousand, three hundred ninety-seven".