142620437 has 2 divisors, whose sum is σ = 142620438. Its totient is φ = 142620436.

The previous prime is 142620433. The next prime is 142620451. The reversal of 142620437 is 734026241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135512881 + 7107556 = 11641^2 + 2666^2 .

It is a cyclic number.

It is not a de Polignac number, because 142620437 - 2² = 142620433 is a prime.

It is equal to p_8051780 and since 142620437 and 8051780 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142620433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71310218 + 71310219.

It is an arithmetic number, because the mean of its divisors is an integer number (71310219).

Almost surely, 2^142620437 is an apocalyptic number.

It is an amenable number.

142620437 is a deficient number, since it is larger than the sum of its proper divisors (1).

142620437 is an equidigital number, since it uses as much as digits as its factorization.

142620437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 142620437 is about 11942.3798717006. The cubic root of 142620437 is about 522.4690725954.

Adding to 142620437 its reverse (734026241), we get a palindrome (876646678).

It can be divided in two parts, 1426204 and 37, that added together give a palindrome (1426241).

The spelling of 142620437 in words is "one hundred forty-two million, six hundred twenty thousand, four hundred thirty-seven".