49142278 has 4 divisors (see below), whose sum is σ = 73713420. Its totient is φ = 24571138.

The previous prime is 49142273. The next prime is 49142279. The reversal of 49142278 is 87224194.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49142273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12285568 + ... + 12285571.

It is an arithmetic number, because the mean of its divisors is an integer number (18428355).

Almost surely, 2^49142278 is an apocalyptic number.

49142278 is a deficient number, since it is larger than the sum of its proper divisors (24571142).

49142278 is a wasteful number, since it uses less digits than its factorization.

49142278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24571141.

The product of its digits is 32256, while the sum is 37.

The square root of 49142278 is about 7010.1553477794. The cubic root of 49142278 is about 366.2844047401.

The spelling of 49142278 in words is "forty-nine million, one hundred forty-two thousand, two hundred seventy-eight".