47422142 has 4 divisors (see below), whose sum is σ = 71133216. Its totient is φ = 23711070.

The previous prime is 47422099. The next prime is 47422147. The reversal of 47422142 is 24122474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24122474 = 2 ⋅12061237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47422147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11855534 + ... + 11855537.

It is an arithmetic number, because the mean of its divisors is an integer number (17783304).

Almost surely, 2^47422142 is an apocalyptic number.

47422142 is a deficient number, since it is larger than the sum of its proper divisors (23711074).

47422142 is a wasteful number, since it uses less digits than its factorization.

47422142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23711073.

The product of its digits is 3584, while the sum is 26.

The square root of 47422142 is about 6886.3736465574. The cubic root of 47422142 is about 361.9598410931.

The spelling of 47422142 in words is "forty-seven million, four hundred twenty-two thousand, one hundred forty-two".