42077437 has 4 divisors (see below), whose sum is σ = 42221340. Its totient is φ = 41933536.

The previous prime is 42077423. The next prime is 42077449. The reversal of 42077437 is 73477024.

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 2 ways, for example, as 25341156 + 16736281 = 5034^2 + 4091^2 .

It is a cyclic number.

It is not a de Polignac number, because 42077437 - 2²³ = 33688829 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 (42077417) 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, 71512 + ... + 72097.

It is an arithmetic number, because the mean of its divisors is an integer number (10555335).

Almost surely, 2^42077437 is an apocalyptic number.

It is an amenable number.

42077437 is a deficient number, since it is larger than the sum of its proper divisors (143903).

42077437 is a wasteful number, since it uses less digits than its factorization.

42077437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143902.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 42077437 is about 6486.7123413945. The cubic root of 42077437 is about 347.8161627556.

The spelling of 42077437 in words is "forty-two million, seventy-seven thousand, four hundred thirty-seven".