1423204534 has 16 divisors (see below), whose sum is σ = 2249687520. Its totient is φ = 673921600.

The previous prime is 1423204507. The next prime is 1423204591. The reversal of 1423204534 is 4354023241.

It is a happy number.

It is a super-2 number, since 2×1423204534² = 4051022291196314312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148519 + ... + 157810.

It is an arithmetic number, because the mean of its divisors is an integer number (140605470).

Almost surely, 2^1423204534 is an apocalyptic number.

1423204534 is a deficient number, since it is larger than the sum of its proper divisors (826482986).

1423204534 is a wasteful number, since it uses less digits than its factorization.

1423204534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306455.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 1423204534 is about 37725.3831524612. The cubic root of 1423204534 is about 1124.8357380583.

Adding to 1423204534 its reverse (4354023241), we get a palindrome (5777227775).

The spelling of 1423204534 in words is "one billion, four hundred twenty-three million, two hundred four thousand, five hundred thirty-four".