122790538 has 8 divisors (see below), whose sum is σ = 198353988. Its totient is φ = 56672544.

The previous prime is 122790533. The next prime is 122790557. The reversal of 122790538 is 835097221.

It can be written as a sum of positive squares in 2 ways, for example, as 118657449 + 4133089 = 10893^2 + 2033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 122790497 and 122790506.

It is not an unprimeable number, because it can be changed into a prime (122790533) 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, 2361331 + ... + 2361382.

Almost surely, 2^122790538 is an apocalyptic number.

122790538 is a deficient number, since it is larger than the sum of its proper divisors (75563450).

122790538 is a wasteful number, since it uses less digits than its factorization.

122790538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722728.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 122790538 is about 11081.0892063912. The cubic root of 122790538 is about 497.0365209517.

The spelling of 122790538 in words is "one hundred twenty-two million, seven hundred ninety thousand, five hundred thirty-eight".