1437342421 has 2 divisors, whose sum is σ = 1437342422. Its totient is φ = 1437342420.

The previous prime is 1437342409. The next prime is 1437342481. The reversal of 1437342421 is 1242437341.

1437342421 is nontrivially palindromic in base 2.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1298809521 + 138532900 = 36039^2 + 11770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1437342421 - 2¹³ = 1437334229 is a prime.

It is a super-2 number, since 2×1437342421² = 4131906470412282482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1437342481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 718671210 + 718671211.

It is an arithmetic number, because the mean of its divisors is an integer number (718671211).

Almost surely, 2^1437342421 is an apocalyptic number.

It is an amenable number.

1437342421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1437342421 is an equidigital number, since it uses as much as digits as its factorization.

1437342421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 1437342421 is about 37912.2990729921. The cubic root of 1437342421 is about 1128.5481186409.

Adding to 1437342421 its reverse (1242437341), we get a palindrome (2679779762).

The spelling of 1437342421 in words is "one billion, four hundred thirty-seven million, three hundred forty-two thousand, four hundred twenty-one".