42807477 has 4 divisors (see below), whose sum is σ = 57076640. Its totient is φ = 28538316.

The previous prime is 42807473. The next prime is 42807481. The reversal of 42807477 is 77470824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (42807473) and next prime (42807481).

It is not a de Polignac number, because 42807477 - 2² = 42807473 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 (42807473) 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, 7134577 + ... + 7134582.

It is an arithmetic number, because the mean of its divisors is an integer number (14269160).

Almost surely, 2^42807477 is an apocalyptic number.

It is an amenable number.

42807477 is a deficient number, since it is larger than the sum of its proper divisors (14269163).

42807477 is a wasteful number, since it uses less digits than its factorization.

42807477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14269162.

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 42807477 is about 6542.7423149624. The cubic root of 42807477 is about 349.8161674070.

The spelling of 42807477 in words is "forty-two million, eight hundred seven thousand, four hundred seventy-seven".