42311554 has 4 divisors (see below), whose sum is σ = 63467334. Its totient is φ = 21155776.

The previous prime is 42311519. The next prime is 42311557. The reversal of 42311554 is 45511324.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 36421225 + 5890329 = 6035^2 + 2427^2 .

It is not an unprimeable number, because it can be changed into a prime (42311557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10577887 + ... + 10577890.

Almost surely, 2^42311554 is an apocalyptic number.

42311554 is a deficient number, since it is larger than the sum of its proper divisors (21155780).

42311554 is a wasteful number, since it uses less digits than its factorization.

42311554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21155779.

The product of its digits is 2400, while the sum is 25.

The square root of 42311554 is about 6504.7331997554. The cubic root of 42311554 is about 348.4600479647.

Adding to 42311554 its reverse (45511324), we get a palindrome (87822878).

The spelling of 42311554 in words is "forty-two million, three hundred eleven thousand, five hundred fifty-four".