122437421 has 4 divisors (see below), whose sum is σ = 123521052. Its totient is φ = 121353792.

The previous prime is 122437409. The next prime is 122437423. The reversal of 122437421 is 124734221.

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 33512521 + 88924900 = 5789^2 + 9430^2 .

It is a cyclic number.

It is not a de Polignac number, because 122437421 - 2¹⁴ = 122421037 is a prime.

It is a super-2 number, since 2×122437421² = 29981844122262482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122437423) 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, 541646 + ... + 541871.

It is an arithmetic number, because the mean of its divisors is an integer number (30880263).

Almost surely, 2^122437421 is an apocalyptic number.

It is an amenable number.

122437421 is a deficient number, since it is larger than the sum of its proper divisors (1083631).

122437421 is a wasteful number, since it uses less digits than its factorization.

122437421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083630.

The product of its digits is 2688, while the sum is 26.

The square root of 122437421 is about 11065.1444183978. The cubic root of 122437421 is about 496.5596097248.

The spelling of 122437421 in words is "one hundred twenty-two million, four hundred thirty-seven thousand, four hundred twenty-one".