420434525 has 12 divisors (see below), whose sum is σ = 595816032. Its totient is φ = 288297840.

The previous prime is 420434519. The next prime is 420434533. The reversal of 420434525 is 525434024.

It is a de Polignac number, because none of the positive numbers 2^k-420434525 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1201067 + ... + 1201416.

It is an arithmetic number, because the mean of its divisors is an integer number (49651336).

Almost surely, 2^420434525 is an apocalyptic number.

It is an amenable number.

420434525 is a deficient number, since it is larger than the sum of its proper divisors (175381507).

420434525 is a wasteful number, since it uses less digits than its factorization.

420434525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402500 (or 2402495 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 420434525 is about 20504.5001158282. The cubic root of 420434525 is about 749.1454117937.

Adding to 420434525 its reverse (525434024), we get a palindrome (945868549).

It can be divided in two parts, 42043452 and 5, that multiplied together give a triangular number (210217260 = T₂₀₅₀₄).

The spelling of 420434525 in words is "four hundred twenty million, four hundred thirty-four thousand, five hundred twenty-five".