37421421 has 8 divisors (see below), whose sum is σ = 50213664. Its totient is φ = 24788400.

The previous prime is 37421389. The next prime is 37421429. The reversal of 37421421 is 12412473.

It is a happy number.

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

It is not a de Polignac number, because 37421421 - 2⁵ = 37421389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 37421391 and 37421400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37421429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39255 + ... + 40196.

It is an arithmetic number, because the mean of its divisors is an integer number (6276708).

Almost surely, 2^37421421 is an apocalyptic number.

It is an amenable number.

37421421 is a deficient number, since it is larger than the sum of its proper divisors (12792243).

37421421 is a wasteful number, since it uses less digits than its factorization.

37421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79611.

The product of its digits is 1344, while the sum is 24.

The square root of 37421421 is about 6117.3050438898. The cubic root of 37421421 is about 334.4825187877.

Adding to 37421421 its reverse (12412473), we get a palindrome (49833894).

The spelling of 37421421 in words is "thirty-seven million, four hundred twenty-one thousand, four hundred twenty-one".