42047401 has 4 divisors (see below), whose sum is σ = 45869904. Its totient is φ = 38224900.

The previous prime is 42047387. The next prime is 42047417. The reversal of 42047401 is 10474024.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42047401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42047431) 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, 1911235 + ... + 1911256.

It is an arithmetic number, because the mean of its divisors is an integer number (11467476).

Almost surely, 2^42047401 is an apocalyptic number.

It is an amenable number.

42047401 is a deficient number, since it is larger than the sum of its proper divisors (3822503).

42047401 is a wasteful number, since it uses less digits than its factorization.

42047401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822502.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 42047401 is about 6484.3967336985. The cubic root of 42047401 is about 347.7333828955.

The spelling of 42047401 in words is "forty-two million, forty-seven thousand, four hundred one".